Allergies vs. Sleep Apnea

It really seems unfair to have both Sleep Apnea and Allergies. It's a horrid thing to deal with. The allergies are making my sinuses have so much pressure and then at night when I lay down and the pressure is at is worse I then have to put a face mask on that hits just about every sinus pressure. If I sleep with out the mask I wake up with a terrible head ache from not breathing well (or at all) But I just can't handle the pressure of the mask. sigh.