Darn allergies!

I don't have allergies but apparently, I have pregnancy allergies and frankly, I don't like them! My eyes are itchy, my nose is runny (this may actually be from a cold), I can't stop snnezing, and my head is swimming. I haven't felt like myself in almost two weeks. Don't pregnant women have enough to go through besides adding allergies on top of it? Ugh. I've been taking medicine everyday, which helps, but my symptoms are still there. It's driving me nuts! I can't focus on school work and I can't sleep at night because of it. My husband thinks maybe we need a new filter. Not one of those furnace filters but maybe an AC filter. If it will help, I'm game. Alleriges suck. I want to breathe again!