Okay, I'm currently using the nuvaring birth control. I usually skip my period (I leave the ring in for 4 weeks and then immediately put a new one in). However, last month I miscounted and had left the ring in for 5 weeks. So, I went and bought my new one and put it in. My husband and I didn't have a lot of sex during that time so I figured I was in the clear. Now, I'm finishing up my third week of my new ring (my husband and I have had sex several times in the past couple of weeks and we don't use condoms) and yesterday when I went to the bathroom I had light brown dishcharge/tissue. It's happening again today. With the birth control ring in, I shouldn't have any form of a period until I take it out for the fourth week. Is this possibly implantation bleeding or my body cleaning itself out since I left my bc in for too long last month?