I've been on nexplanon for 10 months. During those ten months I've gotten my period regularly but it was dark brownish. I had protected sex last month and a week after, I got my period but there was more blood then normal. I was off my period for 5 days then I got it again. I was off if for 10 days and now I have it again. Should I be worried about a possible pregnancy or is it just the nexplanon??