The problem with Drinking too much

I'm Richard 29 single and I have a sister Clare 31 single my only sibling and as long as I can remember we fought like cats and dogs. Last April we were at mutual friends wedding, both by ourselves. I was drinking all the time at the reception and so was Clare, we kept out each others way mostly as not to cause a scene on our friends big day. Anyway the next morning I awoke in my motel room bed naked with a naked woman beside me. No memory of who she was or how we ended up together in bed together. But I had a vague memory of sex with someone, then I had a look at the face of the woman who was sleeping on her side with back towards me. It was Clare we had ended up sleeping together and I had fucked my sister. It wasn't long before she awoke and soon realized we had sex the night before. Instead of blaming each other over our sexual relations the night before, we promised to keep it to ourselves. Clare said she had other problems to concern her, she needed a job s her employer had closed down. Job are hard to find in our area, as people are staying were they are at the moment. I tried to put it out of my mind, but several weeks later, I called by Clare she wanted to know if I could put her as she couldn't afford her rent much longer and also she had missed her period. I having been her only sexual partner in months, with that news I said she could stay with me as long as she needed too. She moved in the next day and it was awkward for the few days, trying not to talk about her may being pregnant to me. Finally I said I would look after if she was, as our family doesn't believe in abortions. But it was her choice, that seemed to break the ice and the next day I got a test to see if she was pregnant. As it was nearly 6 weeks since our night together. She tested herself and got a possible positive. We waited another week and she tried again, positive result and so went and seen a doctor and was tested and was confirmed as pregnant. Now we had to tell our mother Joanna divorced, father had left years earlier and we haven't had contact since. To say Joanna was less than impressed is a mild understatement. But she loved her children and came to referee us living together. But we were getting on very well indeed and had actually been sleeping together for mutual satisfaction, because you can't get more pregnant when your pregnant. Joanna wasn't impressed by that either, Clare said I'm pregnant and I'm horny also so why not. Joanna replied I get horny too and I don't jump into bed with brother. Clare isn't one for backing down and she replied well you can't can you, you don't have a brother only a sister. That's not the point Joanna replied, Clare responded if your horny get Richard to fuck you, he's pretty good. I kept out of it and sneaked out and stay away for about 3 hours. On my return they had made peace it seemed and Clare saw me first and told me I had to fuck Joanna. I thought she was having me on, she wasn't as Joanna came in and so you've returned have you. Adding Clare says you good, prove it to me now. With that she took my hand led me to my bed and after a fairly awkward start I fucked my mother. That was at the end of June and we now all share my bed, Clare is happy to share me with Joanna and I don't get much say in it. I'm told who I should fuck and just follow their orders. Joanna has also gotten work now and we're living together in my 3bedroom house. Clare has had every test there is and the baby girl is healthy the tests say. I've decided to go along with the flow as they say, but I feel it good for both of us. Clare likes sex and Joanna likes sex too but not as much as Clare does.