I'm living with my aunt and uncle

My parents moved a good 500 miles away but I wanted to finish my last year in the school in the one I was in. So my aunt said I should move in with them as they have lots of room plus, I could be a help to her. It seemed like a good fix to me plus, my aunt who is mom's younger sister is only 8 years older then I am so, its like living with say, a older sister more then my aunt.
It was still very warm in Oct. and my aunt who may have 5 extra lbs on her sexy little body seem to like to tease me with very short cut offs and lose tops without a bra. At times she would catch me looking and smile but not move giving a great shot of her ass cheeks or at times a great show of her tits under her top. A few times I got hard watching her weeding her garden or working in her house and say "Teenage boys just can't keep it down." laughing as if it was a joke.
I wondered why she hadn't gotten pregnant cause after all they had a bedroom all set up for a baby with everything they would need and going by the dust on it, it looking like it was ready a couple years ago. I night when my uncle was away I found my aunt looking into the nursery with tears on her cheeks and I empty wine glass in her hand. I asked if she was ok and she said that she wanted a baby so bad, as her tears started running out of her.
I took her in my arms giving her a hug when she looked up into my face and said "I bet you could do it."
Do it? Do what? I wasn't sure what she was taking about when her arms went around my neck and she pulled me down kissing on the lips, and it wasn't any aunt kissing her sister's boy kind of kiss, but one with her tongue deep inside my mouth.
The next thing I knew I was on her bed naked as the day I was born, with my aunt on top of me sucking my cock as she pushed her bald pussy in my face. Do have to say that I wished she had washed first cause she was a little strong tasting but it wasn't long before she was holding my cock as she slid her pussy down on me. She may've been a little strong tasting but she has one tight little cunt. She worked at getting all of me inside of her for a good 5 minutes before her ass landed on my thighs.
Soon she had her head thrown back yelling "Oh FUCK OH FUCK YES that's it I'm going to CUM YES YEEEESSSSS." as she was fucking me like some wild woman. On her 4th time she came, she started yelling for me to cum with her and to fill her with my cum. I came hard as I pushed up as hard as I could giving my aunt every drop of sperm I had in my balls to give.
She put her head under my chin as she purred like a kitten with our mix cum running over my balls. After what had to of been a half hour she got up taking back in her mouth sucking me back to life telling me to get on top and fuck her the way she needed to be fucked. 4 times we did it before the sun came up that night and every chance we got after that, and at times I would fuck her when my uncle was home but in a different room doing whatever.
On thanksgiving she give both my uncle and me the news that she was pregnant. My uncle was so happy he jumped up hugging her and spinning her around in the air before coming to me taking my hand shaking it saying "Thank you son, thank you ever so much for this gift." That's when I realize that they had planned on me impregnating my aunt, and that's why they wanted me to live with them.
So my aunt is starting to get a petty big belly on her being 6 months along but she still sleeps with me every other night and still fucks like a wild woman, plus is saying that they want 3 maybe 4 children and they want me to father them all. I can't thinking of anything I would rather do as long as I have my sexy little aunt in my bed.