Parents giving me grief

My son, 2 years old had a febrile seizure a few days ago. It was very scary and came out of nowhere. Later I called my mom told her what happened and was with him at the Hospital for 3 days so the Doctors can keep an eye and do a brain wave test. I did some reading and he had his mandatory MMRV vaccine done a few months ago and can’t help but think that this could be a delayed side effect.

Just then my mom messages me how he is and asking if he’s done any vaccines as of late. I said, yes and then she started going off at me. That I’m going to cause big damage to my kids by causing vaccine injury, just So I can go to work and earn a few bucks!!!

I feel horrible already but I think it’s uncalled for for her to come at me this way. I feel like she used the situation to attack me. She didn’t come visit once during the hospital stay, Neither call!!! I told her it’s not necessary to discuss this now and she hasn’t responded at all.

I haven’t told my husband about this yet because he’ll probably will be pissed off. I don’t know if I should. But I feel like my family gives me no support-even emotionally in bad situations. There’s no relying to them. Should I say some or leave it alone?