Finally was given unsolicited pregnancy afvice/shaming

I've been lucky so far with not getting the unwanyed advice but today my sister of all people sent me an unprompted text saying "you're not getting the flu shot right?" I said I already have, got one last year too. She replies well if your fine with hurting the baby. I was appalled. I honestly can't beleive she said that, I have done everything for my baby from the food I eat to the amount of rest l I get and everything inbetween. It really hurt my feelings she would say that. :(