Got my sister pregnant

I'm 51 and divorced for 4 years and my sister 47 my only sibling came to live with after her divorce last year when she was 46 and we started fucking. Neither of us took precautions and my got pregnant after every test there was, and no problems found she decided to have the baby girl. Our daughter was born last week a little early but healthy, as for our families, they support us, but are still a little shocked. Neither of us thought she could get pregnant and were both taken by surprise. We still sleep together and won't take any precautions when we resume sexual intercourse. Whether or not she gets pregnant again we'll take our chances. We both only had boys while married and daughter is the first girl for us. My sister always said she wanted a girl and her wish came true.