I am allergic to amoxicillin. is it safe for me to eat cheeses that contain penicillium mold?

Good question: Better be cautious, even if you consumed the blue cheese before, but mind you, allergy to amoxicllin, or to any drug, at times is rather a side effect not a true allergy, rash developing if you have viral illness and receive amoxicllin can be interpreted as allergic reaction, at any rate, try to avoid the blue cheese, keep an antihistaminic and an epinephrine pen handy, till you see an allergist