Yeap, it's part of the process. I had really bad nausea post removal, I don't remember having nausea ever in my life, even when I was pregnant. Also, I didn't get my period until week 7 post removal, I had the mirena for 4 years. So, don't worry, it will get here. Everyone's body is different. We still use condoms and I am 9 months post removal. I also track my cycle on mymonthlycycles.com. It tells me when I am fertile and during those times we are especially careful. Yes, I know, not the safest method. But it works until I decide on a more permanent way of birth control. My husband does not want to hear about a vasectomy, and I figure birth control is just as much his responsibility as it is mine. Good luck.