Pelvic pain!

Heather • TTC #2, for 5 years
I've had pretty bad pelvic pain for the past 3 days, it started about an hour after my hubby & I had sex. (We hadn't for about a week before that) so I'm wondering if that's maybe the cause somehow? Or could it be something else? We are TTC so it kind of worries me that some thing is wrong. 😕