where do i go to have my immune system tested?

i suspect that i have an extremely weak immune system. the slightest cold / wetness to my body develops into goose bumps then runny nose non stop for days follow by sneezing followed by ear ache sore throat and burning chest.

i originally thought when my problems surfaced 4 yrs ago that i suffer from allergies and the ent speacialists treated me extensively over 2 yrs for this with no lasting positive results. all medication works but once i stop the symptoms return. i now turned to wearing permanent fur lined boots and have a heater permanently on where i sit to counter the cold air conditioners in my office.