I'm so glad I found this web site! My side effects:weight gain, depression, constant spotting, muscle pains, breast tenderness, sharp pains (like something is poking me on the inside), bleeding during intercourse (gross it drips like a waterfall) and worse of all THE DISGUSTING SMELLY CONSTANT BROWN DISCHARGE! This is embarrassing, my husband thought that I had an affair and caught a STD! I've gone to the doctor every six months to check if there is something wrong; maybe BV or some type of infection but NOTHING is wrong! I'm getting my Mirena out this week. For all the ladies trying to get it out and the doctor is charging an outrageous fee: try Planned Parenthood.