Okay guys, so I have been having some dull pains in my pelvis for the past 3 days or so, it stays for about an hour or 2 then leaves, it's not super bad pain, but it is very annoying, especially when I try to sleep; I have to sleep on my side or stomach. This morning, I was stuck in bed because It felt like my leg and knees would pop out of place if I tried walking but not really.  its hard to describe.

what's the deal?
Has this ever happened to any of you?

Depending on your age and activity level, it could be anything from sciatica to kidney stones.  If you've been dealing with it for three days and it is impairing your mobility it is time to see a doctor.