Diagnosed wit mono dr gav me meloxicam,cephalexin keflex m broken out l have a rash its swollen on my face chin around eyes is this normal or alleric?

Could be either: Some viral infections (like mono) can cause you to develop a rash with penicillin related antibiotics (like cephalexin). Given the swelling, it sounds more like an allergic reaction. You should see your doctor, who can prescribe a different antibiotic if they feel it is needed. If at any time you develop inability to swallow or trouble breathing, go immediately to the ER. Hope this helps!