Little things never stay little

I’m so burnt out. My sons has had health problems his whole life and just when we thought it was done he gets a ear infection. I know every one gets them but I can’t help but feeling like this ear infection is a “fuck you” telling us his health stuff will never end and nothing that was supposed to be minor health problems stays minor with our son, they always get worse and devolp into something else. On top of that I got my iud put in today and I can’t stop worrying about it moving and I’m in so much pain I can’t wAlk. So me and my son are just laying in bed in pain and there’s nothing I can do. I feel so useless