Hi, I'm a 22-year old asian female. Roughly 48kg and 5'4". The only medical issue I have is an allergy to almost all nuts expecially peanut.

I woke up this morning and my upper lip was .. well .. much larger than it's supposed to be. Inflamed or swollen or whatever it's situation is called. It doesn't hurt, really, just feels annoying. However, i'm a girl and I can't go out like this! I don't know if I may have been bit by something in the night? or is it an allergic reaction to something? What can I do to treat this and ger rid of it? Thank you