Having to live with brother

My idiot husband Roland got involved in get rich quick schemes and it didn't go well. We went totally bankrupt, because the idiot went all in. Not that we were that well off before and then he took his own life. With no insurance, job and pregnant with our child, I was left homeless and broke. My parents were already dead years before and Roland's parents are useless at the best of times. My only hope was my older brother David 32 lives in the country and works from his home. David has always been a shy and reclusive person, but he was all I had left to help. I'm Judith 29 have 3 children, one by Roland and two by David. Early 2019 I was able to contact David with the help a Christian Charity group who helped the down and out. He arranged for me to join him on his property and also got me anything I needed. Our first weeks together were normal and we got on pretty well together and then my daughter Catherine was born in May of 2019 and I hoped I might be able to find job after a while and start to get my life back on track. No hurry take your time David said, I had a trouble free birth and was up around as soon as my new doctor would allow. No bills to worry about and I could get anything I wanted by just asking David. He also help take care of Catherine and would get up at night bottle feed and nurse her back to sleep allowing me a full nights sleep. Even his old dog Rusty slept by her cot and if she made a noise would wake David. I done the house work and cooking as a way of paying him back. In 2020 the pandemic struck and we were home with no visitors, I started getting restless, not able to anywhere. We had always gone shopping in the local town on Saturday mornings and I missed that. Not that it was a big town and just about everyone knew everybody else, the only exception was David. Nobody knew much about him and seeing me with him and me wearing wedding rings, they put two and two together and got 8. They assumed I was his wife or at least his partner and me having changing my surname back to my maiden name added to to their conclusion. The doctor was in the next larger town over and didn't practice in the smaller town as it had its own doctor but not facilities the larger town had. David had lived next to the larger town before buying his property which is only 6 miles from smaller town and 25 from the larger one. David went to larger town to see the doctor there and on my arrival that doctor became my doctor too. David being shy and quiet the locals didn't get much out him and at first I also quiet due to my own problems at the time. Anyway David, Catherine and me alone all the time with Rusty was the only company we had. I've seen David naked many times growing up and hadn't taken much notice of his cock. But one day I walked in on him drying himself and his cock was just hanging there and it was longest I've ever seen. Not hard just hanging between his legs on the slack, that started me getting horny after I had seen it. I've always liked sex and not having had any for what seemed a very long time. So after a week I was laying in my bed masturbating and decided I had enough of playing with myself. So I went to David's room totally naked and joined him in his bed, he was confused at first and then shocked when I asked him to fuck me and after a bit of talking I finally got him to fuck me. From then on I slept with him and I had missed one detail, I wasn't on any protection and we hadn't used any either. I was the first to realize but dismissed it and we going to the doctor on the Tuesday for a checkup for Catherine and thought I'll right until then. Well we couldn't go to doctor as it rained hard and the road flooded and it was another week before I got to see the doctor and I had decided to let it go and see what happens. I got pregnant and after every test going showed the babies were fine. Yes twins, David was happy and so was I and I'm planning to have as many children as he wants.