I'm allergic to many things, dust, dust mites, cats, rabbits
, dogs, everything indoors, many things outdoors -- I take a 24 hr allergy pill daily and don't mind it. My sister, on the otherhand, has double the allergies I have, and has just begun the shots.
Regarding your symptoms - I'm not sure the cramping & going to the bathroom has to do with your allergies, maybe? You may want to talk to a psychiatrist about that - especially the panic attacks.