I've been with my boyfriend 4 years and sexually active 4 years, we have sex like 3/4 times a week, but the past 3 weeks we haven't been able too. For some reason when he goes deep it really really hurts, this has never happened before I have no idea why it's like this! The 3rd week we didn't have sex because I was on my period, but now I'm off we're trying again but it kills. I'm going to the doctors tomorrow but wondered if anyone knows what it could be?