Hello, I am a 5ft 10in, 165lbs 24 year old man. My medical history is Hemophilia A and a history of stomach ulcers. I woke up yesterday with a swollen upper lip. This morning when I woke up I noticed my upper lip is about twice the size it was yesterday. It is painful to touch. I also have a painful pimple below my right nostril just above my upper lip. I left it alone untill lastnight before I went to sleep. I searched online for any possible explanations. I read that it could be from an allergic reation, ulcers, excessive drinking or use of tobacco. I'm not sure what to link it to, I havent injested anything lately that i recall being allergic to. Is there an explanation for this?