Enlisted

I was a bit of a wild child growing up, never got in any really bad trouble. But grew out of it before going to university, my mother claimed I took after her brother. Her only sibling was like me growing up and never grew out of it. Luckily our families weren't short of money and finally my wayward uncle (then 44) decided to marry and start a family. He found a nice woman 30 at the time, she married for a better life. But it soon started to sour as she didn't pregnant, my uncle blamed her of course it could never be him. But my mother his older sister and only sibling got her sister-in-law tested and nothing was wrong with her. So, it was my uncle, my mother knew it was a waste of time trying to her brother to get tested. So, she decided to solve the problem and use me to get my aunt pregnant, as her only son and closest family male to her brother. I was in my last year at university, and I was visited by my mother(widow). I was told not to tell anyone else, and she told what she wanted me to do. I'd a fairly good sex life and didn't have a current girlfriend. My mother really liked her sister-in-law and so did I, she also thought her brother over drinking, heavy smoking and heavy drug use was the cause of his failure to impregnant his wife. I was convinced to help; it was easy for my mother to get me to help she knew which buttons to push as they say. Also, I liked sex and as it was direct injection, I was willing to assist. Only thing left was get my aunt to agree, which was easy my uncle had been berating her again for her failure. It was awkward fucking my aunt at first, not because of her, but because my mother was in the room with us. The only problem was my uncle wasn't fucking his wife at the time and was in one his moods as my mother called them. Anyway, he finally fucked his wife, and she was already pregnant to me. My uncle wouldn't go with his wife to the doctors and so my mother went with her every time. Once she was confirmed as pregnant, my uncle was insufferable. I almost told him I had done the deed not him, but my mother was there and stopped me. My aunt was now neglect by my uncle, I kept seeing her and got sex off her. After the birth of her daughter, my uncle wasn't happy as he wanted a boy. But said he would try again; he never did as he also liked driving cars fast and while drunk, he crashed his car and killed himself. My aunt moved in with my mother and I was surprised when I heard my mother telling my 2 sisters that they had saved some of uncle's semen for later use. Well, I had the green light to fuck my aunt again and was quite happy to do it, I also found out my mother and aunt were having an affair themselves. But I visited my mother and aunt regularly and got her pregnant again and my uncle would've been happy as it was boy this time. I've since married and only me my mother and my aunt know who the father of her children really is. I still get sex from my aunt sometimes, but she hasn't got pregnant again, maybe she takes precautions I don't know. But there is semen left or so the rest of the family thinks.