+1 on the neti pot, and also washing your face before bed.

To keep your face off those moldy hotel pillows (and support your neck), I just take a bath towel, fold it in thirds, roll it and put it under my neck, to sleep on my back.

But the pollen this year has been insane, and the molds have come right up just as the pollen is going down. I've been fighting a raging case of allergic conjunctivitis (could hardly see out of my left eye), which I've never had to deal with before outside of very mild itching. My doctor prescribed Patanol eye drop$$ which only helped about halfway until the pollen came down a bit.