Okay so yesterday I broke out into massive rash hives everywhere and so I went to the doctors this morning and I bought some antihistamine and the rash cleared up very quickly. However my eyes are like super itchy atm and my head hurts and my throat also hurts and my nose is kinda runny/blocked. Is this allergies or am I just getting a cold again?? And what on earth would I be allergic to? Could it be hay fever?? But like I've never ever experienced this before. I'm going to buy some allergy medicine tomorrow just in case... How can I be sure what exactly I have?? The nurse (walk in clinic) didn't really say anything because the hives had kind of dyed down by the time I'd seen her so just recommended antihistamines. Should I maybe make an actual doctors appointment for this or...??