What the !!???

My girlfiend Emma wanted me to know what it was like to have sex as a girl. She made me drink a potion that she said would temporarily transform my gender. She had a crazy gypsy godmother who I privately mocked for her fortune telling etc. I decided to humour her nonsense, I drank it in one and treansformed into a brunette woman, my same age, she said to me laughing with a divilish grin "Hey Christine, you look too prestine. Time to break you in". "What the hell did you do Emma?" I replied "I just gave you a new lease on life, a new perspective, the only condition is don't get pregnant or you'll be sealed in your female form forever Chris." "Fat chance of that ever happening" I replied. We went out shopping, she went down on me, I went down on her, she said I was already learning a few tricks. The next night she cooked dinner and said she was having an old friend round to join us. A large black man called over named Shawn, who she knew from high school years ago. After a few bottles of wine she started to kiss Shawn which made me pretty angry. She wispered in my ear "play along, one night only". Emma took off my top as Shawn pulled down my panties. "I like to watch" Emma said as she sat in a seat in the corner masturbating. "Go on, stick it in her Shawn, she's raring to go" with that he plunged himself into my glistening pussy. I moaned in shock, I'd never experienced anything like it. Shawn started to plow me hard. Over and Over. I bit my lip with these new sensations, "Oh my god" I shouted "Yeah take it" Shawn shouted ramming me again with his massive member. "You're so big" I exclaimed. "Yeah he is" Emma said "You love it, don't you?" "Oh fuck yeah! it's amazing!" I shouted as I came for the first time ever as a woman. Emma kept fingering herself as Shawn kept stretching me open and pumping into my new love hole. I felt another orgasm building. "Tell me you love being a girl" said Emma "I love being a girl" I shouted. "You love having a pussy?" "Yes I love it!" I said in blissful exuberance. "Tell me you want to have Shawn's babies". "What?" I said as I looked at Emma who was furiously masterbating. "Yes, do it Shawn" Shouted Emma. Shawn gripped me tight as I tried to wriggle off him, my new body was no match for his strength. "Noooooo, please stop" "When I'm done baby momma," shouted Shawn. He kept a hold of me as he pistoned in and out of me. I felt my orgasm blow, as Emma came too grinning wildly at me "Oh yeah" my new pussy betrayed me as it gripped Shawn's cock. I felt streams and streams of goo shoot inside me, filling me up. I felt a strange euphoria and electricty fill my body as I felt my soul sealing into my new form. "Welcome to womanhood Christine. If you thought that was different wait till you pop a baby out of you". I screamed again, this time in horror.