I posted this on another forum but I want a wide range of responses. I got my mirena IUD out 16 days ago and had a regular four day period. me and my husband have been bding every day multiple times since my period and today is my ovulation day according to glow but for the past two days I've been cramping a little and have back ache, loss of appetite and insomnia. Today I started having a little light pink discharge but my normal periods are usually very very heavy they have been since I started. I don't know if it could be implantation spotting and cramps or my period starting. But my period isn't supposed to start for awhile