Is this a normal reaction to laser hair removal for leg and bikini? (Photo)

I received my first laser hair removal treatment (yag) on Monday for legs, bikini and underarm. All went well. On Tuesday my legs were covered in welt/hives and very, very itchy. I treated with cortisone and oral antihistamine (Benadryl and reactin) Wednesday and Thursday brought no relief from the itching. I’ve switched to aloe as the hives have flattened and are now purple almost bruise like spots. The itching comes and goes. Im not sure if this is a normal response and if I should try again.