Workouts causing what?

Hello!

I have been working out 5-7 days a week for about five weeks now! I have noticed that for 2-3 weeks I bleed after EVERY workout, which then causes me to bleed for the remainder of the night. This happens every day. I do have an iud currently, but IT HAS ALREADY BEEN REPLACED BECAUSE MY OTHER IUD MOVED. My old iud basically fell out of place. Do you think my workouts have caused this iud to fall out of place too? In addition to the bleeding I feel bloated, my boobs are sore, and I am having some cramps. What do you think is the culprit?