New relationship problem?

Hi, a few days ago I had fish that my girlfriend of 2 weeks made me. It was quite tasty but unfortunately I am allergic to fish. Since this is a new relationship I was afraid to confront her of my extremely sensitive allergy. What got worse was that when I was (pardon me) having with her, I told her that her (expletive deleted) smelt like the dinner she just made. She got very mad and decided to run to the kitchen and grab the leftovers and smear it all over me down under. Now not only am I very ill but it looks like I have > Since she does not have , She is going to think I cheated on her now. What should I do?