I started my period December 10th and had my mirena IUD inserted the 12th. The procedure went great my doctor said and I’m still going to wait a week to have intercourse but I’m worried the mirena won’t be effective immediately. Today is the 15th and cramps are painful but nothing some Ibuprofen won’t take care of. The bleeding from my period is decreasing but I’m not sure if it’s from the iud or because it’s my period is about to end. But I just want some reassurance that I can have intercourse in about a week and won’t be worried about getting pregnant. Can anyone help?