Ruth's pov
I was still in the doctor's office trying to wrap my head around the thought of having triplets. I was only over a month Pregnant so I wasn't obvious yet unless you touched my abdomen then you could feel a slight swell that was there from the babies. I was happy but also scared as this is my first pregnancy and three babies seemed like alot. I didn't even notice that the doctor had finished his examination of me as the nurse took away the equipment. He left the table to go back to his computers and started typing. "Nurse you may go I'll call for you when I need you again" said the doctor and the nurse bowed her head and left just the doctor and I alone. I was still strapped to the table and couldn't move. Being alone with him made me nervous and I hoped there would be no experiments this time.
The doctor finished typing and came back to the table I was stuck to and produced a plastic bar from his pocket. He stuck the bar in my mouth between my teeth and attached the straps on it behind my head holding it in place. "There is a secret third part of the formula I used on you that I'm curious to see if it worked or not" said the doctor as I watched him unzip his pants and pulled out his large c**k from his pants. My eyes widened at the sight of it and I felt myself getting hot looking at him. I felt myself craving him and wanted him to touch me all over and fill me with his c**k. I started to pant from the feelings welling up inside me and the arousal. "You see the third part was to make you crave my c**k and only my c**k. Sure you will probably still like other men's c***s but mine will now and forever be the only c**k you will truly want at all times of the day. From your reaction to seeing my c**k I can tell it worked" he said with devilish grin. "I received permission to try this particular formula on you and if it worked you would be mine to do as I please. Once you have these babies I will impregnate you myself and with my c*m you will be able to have more than just three babies at a time. The government will be so pleased with my research and I get to enjoy your pregnant body as much as I want. Win win for both sides I must say" he says as he takes off the rest of his clothes revealing his strong body. He had light chest hair that went all the way down his torso straight down to his magnificent c**k. His balls hung from his body slightly and were quite large. Everything about him right now was making her hot and horny.
He walked around the table to between her thighs and positioned his hard length at her entrance. "You will be mine from now on. Other men will have to have my permission to have you. You will be my personal s*x slave and when I want you I will have you. I will claim you forever and use your body any way I want starting now" he said as he pushed himself inside slowly and groaned. I gasped at the feeling of him stretching me with his thick long c**k burying himself in me inch by inch till he was buried up to his balls. Once fully inside he rocked his hips against me softly and picking up speed. He felt amazing inside my p***y and was already about to drive me over the edge. "You can't c*m till I say little slave" the doctor said as he grabbed my hips and f****d me harder. I couldn't move my body at all other then my knees which were starting to shake from me trying to hold my orgasm at bay. "Oh little slave you are so beautiful I knew I had to have you and make you mine. You might have another man's babies inside you but they are mine now to" he said pounding into me making me moan loudly around the gag in my mouth.
My head was dizzy and my body on fire with lust. I couldn't get enough of his c**k and in this moment I was totally fine being his. He f****d me for several more minutes making me writhe holding my release for him. "Now little slave c*m for me while I fill your p***y with my seed" he said and thrust into me hard a few more times and I finally let go and let my release flow through me. I let out a scream and arched my back as much as the restraints would allow. It was the most intense orgasm I had ever had. I felt him cumming inside my walls filling me with his hot sticky seed. "Thats it little slave take my c*m" he groaned. I gladly took it and wanted more if his c*m already. I wanted to milk him dry till there was nothing left. Much to my disappointment he pulled himself out of my p***y though he was still hard and his c**k glistened with my juices. He walked around the table to my breasts and grabbed one in his hand squeezing it. I moaned softly at his touch till he grabbed one of my n*****s and twisted it hard. I hissed at the pain and then he let go and grabbed it between his lips sucking it into his mouth. The pain turned to pleasure and I gasped loving the feeling of him sucking my n*****s. He let go with a pop and said "I can't wait to taste your sweet milk and watch as your t**s get even bigger." he said caressing my body and rubbing his hands over my breasts and stomach. "I'm afraid we will have to continue this later as we are out of time little slave but don't worry I will visit you soon" he said smiling at me. After that he put his clothes back on and called for the nurse to come back in. "She can be taken back to her room now and the only man she is allowed to be with other than myself is the current father of her babies make sure everyone knows that" he said to the nurse. "Yes sir" the nurse said bowing her head to him. "See you soon little slave" he said before taking off the gag and kissing me deeply. He broke the kiss after a minute and turned away walking back to his desk. I watched him longingly as he walked away from me and the nurse undid the straps on the table. I got off the table and my legs felt weak underneath me so I leaned back on the table while the nurse locked my hands and attached the leash. We left the office and the nurse lead me back to my room.
Once inside and the nurse let me go she locked the door behind her. I looked to Tina who was patiently waiting for me to tell her the news. "I'm pregnant with triplets" I said smiling at her. She leaped up from the bed she was sitting on and hugged me tightly, our breasts touching each others with her embrace. "I'm so happy for you but triplets? How is that possible? Most women only have one maybe two at a time" she said looking at me quizzically. "The doctor said it was part of the formula he used on me that will allow me to carry more babies at a time than most women normally would. There is also something else..." I told her not wanting to meet her eyes this time. "What is it?" she asked with concern on her face. "There is also a third part of the formula and now I am the doctors slave" I told her. "What do you mean?" "He had s*x with me and I have never felt such strong feelings before and everything was so much more intense than when I was with Cody. He said I will crave him and only him, I am his now forever." I said to her. "Wow that's alot. I have never heard of this kind of thing happening before. I guess you must be one of the first they have done this too" Tina said with a shocked look on her face. "Problem is I still want Cody but now I also really want the doctor. It's all very confusing feeling" I told her trying to think out my feelings about it all. "Well if the doctor is claiming you you and Cody can't be together for anything other than s*x if he allows it. Not that you would really have been able to be with him anyway" Tina says forlornly. I just nod my head and rest it on her shoulder as we embrace each other. She then takes my hand and leads me to the bed, lays down with me and brings me go lay in her chest. We lay like that for a long time in silence. All I could think about was the doctors c**k and I had to wonder if this is how I will be from now on.