I came off the pill two months ago. My first period was really late, like 38 days. And now I started spotting 18 days later. I'm on day 5 of spotting. It's brown, grainy and usually only when I go to the bathroom it's on the toilet paper. If it's heavier I use a tampon but then barely anything.  It's so hard to keep track of my fertile windows when my period is so wonky. Has anyone else experienced this after coming off the pill?