Hi , I'm so sorry to hear what you've been through. I understand as I have had several times in recent years when I have fallen in my house and been unable to get up for a bit. I live alone, so it's always a bit of a possibility and a scary one at that. For me, the number one thing I do is keep my cell phone on me at all times that I'm in the house. If it's not in my pocket, I instinctively pick it up whenever I get up. I do that in case I do fall and need to call for some help. Just having it on me at all times also makes me feel a bit better too, just knowing I can call for help. I also have my house laid out in such a manner that there are always either walls or some time of large furniture that I can grab onto if needed (I tend to walk with one hand on a wall at all times and that seems to help me a lot and has prevented many a fall).
Those tips arent foolproof but they do make me feel a bit better. It's very easy for those thoughts to creep into your head. Falling while alone and being unable to get up is incredibly scary. I still sometimes shudder when I think of it. I try to remind myself that if it happens, I'll deal with it. I try to remember that I have gotten through it in the past and I will again. I think, in a lot of ways, the mental aspect of it can be more difficult than the actual fall, so you have to be careful to not let it eat you up inside, and be careful to not let the fear get to you. I know that's easier said than done though. Best of luck and remember, you got through it once, if it should happen again, you'll get through that too!