Mirena IUD Pain

I've been having really bad cramps, to where I feel like I'm going to pass out. I've been fighting them for two hours now. I've taken midol and tramadol with not a single bit of relief. I've called my doctor about this (this is the fourth episode), and he had told me to go to the ER if it happened again but I can't afford it. I don't know what to do ?!?! Any tips on relief from cramps ???