I’m bleeding again??

Marissa

Okay ladies so I’m on the nexplanon (for almost a year now) Me and my boyfriend have a lot of sex and he cums in me everytime. I have been having signs of pregnancy but I had my period a little over a week ago and I woke up this morning and I was bleeding (bright red). When I first got in the birth control my periods were irregular but they are pretty regular now so why am I bleeding? Is it something I should worry about?