hi, im 20 years old..didnt think i was allergic to anything until yesterday when I noticed a red rash on my stomach it spread to my legs, knees, ankles and soon my knees began to swell as well as my ankles, my wrists, hands/fingers, and lips. i have a doctors appointment later on today but am really concerned. i took 2 benadryl last night and 2 today and i have a cream called trigentax that i spread on it last night but woke up and everything was the same if not worst. i am freaking out. and it all itches a lot.