It scared me.

So I am on the IUD (Skyla). I’ve gotten to the point of not even having a real period. When it gets time for me to have a period I only bleed after sex for maybe an hour? Sometimes light and sometimes enough to fill a regular tampon. I was cramping yesterday, but earlier in the day around 12-1pm. I thought nothing of it, it went away. Well my boyfriend came over last night and we were both feeling frisky;) didn’t think anything of it until we got like 4 thrusts in and he tells me “Babe you got your period”. I’m like fuck, right now if all times. I was so close!! I always keep wipes near my bed. Always. Well it was a normal amount until I stood up, and it got heavier. I went to move and I literally felt it gush out of me on to the floor and all over my legs. I’m just standing there in shock because I have never had this happen. Ever. I grab the wipes with my boyfriend right there and clean up, well I go to move and it does it again. More all over my legs and floor. I’m scared at this point but I just tell my boyfriend I’m going to get in the shower. I get in the shower and it’s still extremely heavy. I’m standing there and I feel this huge blood clot fall out of me and more blood. Obviously. And then it slows down. But by this point Ive put in a tampon and I’m sitting on the side of the tub and I’m shaking, light headed, and I feel like I’m going to puke. I’m not really sensitive to stuff like this. I finally get the nausea feeling to fade and I walk into the bedroom and tell him he might have to go to the store for me and that I wasn’t feeling well. He is also training for EMT/Fireman for the county we live in and he goes to his car and checks my BP and puts that think of my finger that checks my oxygen and pulse. Everything was fine other then slightly elevated BP. He tells me that he doesn’t think we have to go to the ER and then runs up to Walmart and got a Sprite, Pedialyte and some nausea/ Pain meds. He was so nice and kind, and loving. I felt so bad. But it also scared the shit out of me. Should I call a OBGYN and let them know what’s going on? I don’t know what to do.