Paragard questions!! Help!!

Okay so I’ve had the paragard for 4 months now (maybe 5) and my periods have always come at 31 days , this month I’m on cycle day 39 &’ no period. I’ve also been having other weird symptoms

- bleeding after working out (I’m not even pushing myself that hard) &’ it’s just for not even 2 hr then it completely stops

- bleeding after sex every. Single. Time.

- uncomfortable cramping when I go on my daily walks

The blood is reddish brown and sometimes has baby clots like tiny tiny ones.

Also I did take a pregnancy test at day 32 and it was negative so I’m very confused on what’s going on with my body.

Does this happen to any of you or should I call my dr? I just don’t want to go in there and feel like I’m wasting their time if it’s normal..