Trying to conceive

I've had the same partner for two years. We've known each other 9 years. Okay so we tried for a baby 3 weeks ago. We usually have sex 3/4 times a week that's normal. However this week we haven't been able to it hurts. Like my cervix hurts no burning or itching just pain. Any thoughts on what this could be caused by? Like rough sex? Early pregnancy? It's just really sensitive.