I got my flu shot at work on Thursday afternoon. On Saturday evening, my inside left wrist started itching. By the end of the night I had hives on my thighs, behind my knee, on my hips, abdomen and several welts in various spots. As long as I take Benadryl 50 mg & hydrocortisone 20 mg tablet (that I had from a previous illness), I keep the hives away for several hours...However they have come back worse than ever but migrate all over my body in varying degrees of severity. Has anyone had an allergic reaction to the flu shot start that far out after getting the shot? Everything you read says it will start right away if you are allergic. However, I have changed nothing in my diet or my detergents, etc. If I just know that anyone else has been having this that started that far out, it will convince me more that this is the problem. I would appreciate any help! Thank you!