Your body is your own. You control the access to it. You decide the conditions that allow access (and I am using access in the broadest sense). Those conditions can be as sane or as stupid as you wish. I know that some State laws take a while to catch up with the modern age, but conjugal rights really are from a bygone era. The grown up thing to do is to talk about, seek help and leave if the marriage is irretrievable. I hate with a passion this entitlement nonsense, particulary when it comes to some men in relation to women's bodies. We are NOT in a permanent state of consent which we then withdraw to be "mean".
Get tested. And figure out why you are so wound up over a man-child.