Could My Facial Swelling, Burning Sensation, And Watery Eyes Be Due To Tree Pollen Allergies, And Why Aren’t Benadryl Or Claritin Helping?

My face has been swollen, feeling burned, and my eyes are tearing up a lot. Could this be from an allergic reaction to tree pollen? (I live in Houston, TX) This has been going on for a few weeks now. (some days worse than others) I have tried taking Benadryl at night and Claritin during the day - nothing seems to help much. I tried aloe vera sunburn gel, which soothed the burning but did not get rid of it. Please help!