OUCH, ive got pains in my left lower side, been hurting most of the day. Help?

you might want to see if you can feel your strings, your iud might be out of place, also, pancreitis has the symptoms youre explaining, it wouldnt hurt to make a trip to the doc to have it checked out. also, IUDs are notorious for causeing cysts on your ovaries, it could be a cyst since you hurt around the time of your period, and if it is a cyst, when it bursts, it can be quite painful. but still, go to your doc and have him or her feel your belly and see if youre okay