I fucked my sister and got her pregnant update

My sister Clare moved in with to get away from the seedy apartment she lived in. Then we a bet on a sex position that she thought was impossible and it wasn't and that started our sexual relationship. We had a baby girl together we called Elizabeth, our mother Caroline moved in with us and she joined us fucking. She wanted Clare to have another baby for her and Clare is again pregnant and all test show the baby is healthy. The baby girl we are going to call Caroline after our mother is due in August. Caroline is sleeping with both us still and is providing most of the sex I'm getting at the moment. I've also got a promotion and we are moving interstate shortly not movement is allowed.