I've been on amoxicillin several times in my life without any side effects at all, this time I have been on it for 3 days for strep throat and I have hives. So far about 15-20 of them and they are quite itchy, I've been using essential oils on them to shrink them and stop the itch, but I noticed a few new ones this evening. Should I go back to the Dr about them or can I wait to see if they become more severe? I would rather avoid the germ filled waiting room as much as possible with my immune system already compromised.