<s>[INST] I recently at a stuffed mushroom and it contained feta cheese and I literally woke up about 30 minutes with hives and welts from scratching everywhere. I itch so bad it woke me up. I have since taken 3 Benadryl pills but I still itch. Should I wake my boyfriend up to go to the ER. And my tongue feels alittle sick. I have never been allergic to anything except flagyl. [/INST] HI, thanks for using healthcare magicIt would be best to be seen as soon as possible in the ER or your emergency doctor if your tongue is swelling.This can affect breathing and may indicate that you may  have a very severe allergic response that would not respond to benadryl only.In the ER, you may need steroids as well.You would need to avoid this allergen in the future. If you are not sure if it is the mushrooms or cheese then either avoid both or do allergy tests.I hope this helps </s>