Anxiety about kids starting school when Im 24 weeks pregnant

So last year when my oldest daughter started kindergarten we ended up getting sick constantly for the first 4 months of her being in school, even with her wearing a mask and cleaning her hands constantly. Just as we would get over being sick for two weeks she would go back to school and bring home a new bug from school and it would start all over again. But by the end of the school year we were rarely getting sick, probably because at that point we had already caught everything. Almost 2 months ago we got covid, and it really kicked our butts, we were sick for almost a month.

Now I’m stressing about school starting again😓 my oldest will be in first grade and my other daughter will be starting pre-K , at a different school. I have so much anxiety about us getting sick for months again as they’re starting school, and I’ll be 24 weeks pregnant, I can tell this pregnancy has really weakened my immune system, and it just worries me that I’ll end up getting super sick. Or even worse that my newborn will being getting sick as well, and it’s always super scary when a newborn is exposed to so many germs. my husband works 70 hour weeks , so anytime our kids our sick I’m the one who takes care of them. Any other moms feeling this way? I feel so uneasy about school starting 😓😭😭