IUD with contraction like cramps

Today I got the Mirena through planned parenthood and they were amazing. I've been having contratction like cramps for 3.5 hours and I wanted to know if anyone else had cramps this bad? I've never had kids so I don't know if these are what actual contractions feel like, but it sounds about right from what I've read online. They've started to subside (thank god) but it was pretty unexpected. Also while I'm lying in bed moaning in pain, my boyfriend is saying that his hand hurts from me squeezing so hard 🙄 but he's been so amazing with helping me through this today so I can't be mad about that