[FrayAdjacent911]

Check with an allergist. Get tested. You might be able to do immunotherapy (shots) which can eventually effectively 'cure' your allergies.

In the mean time, see an allergist, get a prescription. Go to a drug store and get a saleen nasal irrigation kit. (this basically a bottle with a squirt nozzle on the top, and little packets of salt. You mix a packet with a bottle of water to make a saleen solution and squirt it up your nose. It feels weird, but it flushes the crap out of your sinuses, and really helps.)