9 Weeks 3rd sinus infection HALP

I’m 9w1d today and I’m in the middle of my THIRD sinus infection since being pregnant, and they’ve all been almost back to back which NEVER happens for me. I know right now my immune system is shot while everything is still adjusting to carrying a baby, BUT is there anything I can do to help this? Make is happen less? All my doctor does is give me an antibiotic when I go that helps for like a week and then I get another one and I’m going crazy!!

My insomnia is a million times worse because I can’t breathe when I lay down and I keep getting headaches from this stupid sinus infection. I work 40+ hours a week with kids, and starting next week I switch from preschoolers to high schoolers (yeah big jump I know, I’m going to die) and I really don’t want to feel this crappy on top of everything else. So ANY advice would be so much appreciated 😭😭