Very glad for the update :) I am glad the doctors figured out what was wrong!
Just in case anyone is curious- I went to the dr today and after doing a lot of tests- pregnancy, std, and using a vaginal and regular ultrasound- they found a lot of fluid on my right side and sent me to the ER. There I got a ct scan and they told me it was a ruptured ovarian cyst. Sent me home with pain meds. Luckily these things started working cause I had been in so much pain for almost 20 hours!
You should see your health care provider, just to be safe. It could be hormonal (ovarian cysts maybe?), the IUD could have moved...it could be a few things, your health care provider cna do an exam and tests if needed.