Just a little history of this issue. Have severe emvironmental allergies. Allergy tested 8 times, 4 time in 2015. Allergic to dust, dust mites, mold, mildrew, oak trees & box elder. Had sinus surgery July 2015, 2 weeks later polynoids were severely inflammed, surgery did not help. Currently getting 1 allergy shot per week. Yesterday afternoon became so congested sounded like a whistle when trying to breathe thru nose. Called ENT, could not get appt till next Wednesday. Called GP, had appt 1045am today. Diagnosis severe sinus imfection & allergies full blown. GP gave me shot; prednisone, cough syrup & antibiotic by mouth. Currently this is what is happening to me. Heart is currently racing, ears ringing louder than usual, muscle cramping, all joints aching, have bad headache. Could it be shot causing this?