Pain and bleeding when moving with IUD??

Heyy,

I got my copper IUD put in April 15th. Got some heavy to light spotting the days after, then it calmed down. I noticed it gets worse when I do physical activity like biking or even yoga sometimes. It's been so weird. Like 2 weeks after getting it I started to get this weird lower abdominal pain, but only with certain movements. It wasn't a constant thing so I was worried something was wrong and maybe it was out of place but I haven't gone to the doctor yet because I'm turning in my senior thesis in a few days and the doctor is far away. Then like 5 days ago I started to get spotting again after going on bike ride and I could literally FEEL the pressure from the IUD every time I went over a bump in the road - horrible. And so spotting started again the day of that bike ride, and then yesterday I started getting lower abdominal pain again but only when I bend back a little bit or arch my back?? The spotting has been getting heavier every day since that one bike ride. Then this morning I did literally like one yoga sun salutation (couldn't even do a baby cobra because it hurt my lower belly too much) and felt a GUSHHH of blood come out, like literally running down my leg. But my period isn't supposed to be for another week so I'm confused. I can't tell if the pain I've been experiencing on and off is cramping or something wrong since it only comes with certain movements and I'm unsure if my on-and-off spotting is spotting or a period. Also, my boyfriend said he can't feel my IUD strings during sex and I'm not sure if that's normal or something to be concerned about. I'm just so confused!!!