Quarantined

I'm Walter 29 and I've had cancer and my immune system isn't at full capacity yet and was advised to self-quarantine for at least a month. I live with my mother Katherine 48 and sister Amy 26, my only family as our father Donald left us just after Amy was born and haven't seen or heard from him since. Amy is an asthmatic and was also told to quarantine herself and Katherine is living in our self-contained granny annex. So she can continue her work as a nurse, she gets everything we need and leaves it at our backdoor. Having disinfected everything first so after a week of watching TV, DVDs and lots of games. We got bored and just wanted out of our quarantine. We started teasing each other and wrestling with each other like when were younger. Then one day I when a little further then I should have and felt up Amy and she got a little angry you could say. But she soon cared down and we started reading to pass the time. The following day we were fooling about again and I got the urge to feel her up. But restrained myself and stopped playing with Amy and she wanted to know why I stopped playing. I told her I was bored and wanted to try something else. Amy then saw the bulge in my pants and realized why I had stopped. So we parted for a time, then later Amy came to me and asked had I taken care of my cock. I just nodded and she said she got horny also and wondered if we could help each other out sometimes. How I asked, she answered by playing with each other and not going as far as intercourse. I responded you will pull me off and I get you off without intercourse. Yes that's it she said. Bored and horny I asked when do you want to start, tonight we can shower together and sleep together and get each other off. I agreed and that's what we did. We did everything except fuck and over the next week, we satisfied each other. But I wanted to go further and started rubbing my hard cock along her arse crack and she let me insert it between her legs and get off that way. Then last Sunday while showering together, I was behind her and put my hard cock between her legs and started to move along her slit. She was enjoying and didn't try to stop me, I then tried to insert it into her and at first failed, on my second attempted she guided it into her cunt. I started pumping her as hard as I could before she changed her mind and I blew my load inside her. Since then we fuck whenever we want and haven't taken any precautions either. What will be will be?