Adult Onset Allergies?

Not sure if this is a medically recognized condition, but it is so real. I have never had allergies before in my life (unless you count my severe and incredibly heartbreaking rash-like reaction to the Miss Piggy bubble bath when I was 7) and now I suffer, oh how I do suffer. It started a little last year when I was playing with Belle, my brother's adorable doggie. My eyes watered and itched. My nose closed up and I couldn't stop sneezing. Since that experience, I have learned to wash my hands immediately after playing with her. As of late the dreaded seasonal allergies have waged an epic battle on my fair ear-nose-throat system. Being new to this onslaught, I have tested many types of allergy relief, even to the point of sticking a jeanie lamp filled with warm water and salt solution up my nose, which runs out the the side (don't worry, this is supposed to happen). However, to my dismay, I am still plagued by that which I cannot see.

If anyone knows of a miracle cure, take pity on me and share!