I'm having the same problems, and I find the Polarimine makes me sleepy too. The only thing I've found that helps a bit is the Fess nasal spray or even better the one you "flush" out your sinuses with. It's only saline solution so perfectly safe. You can also get straight saline drops for your eyes which will flush out the irritants. Most other eye drops and nasal sprays are not completely safe so make sure you only get the saline ones.

It's not fun though is it... especially when the 2nd tri insomnia is also at work so you lie away ithcing and miserable.