I ve been on a Nexplanon birth control for a year and a half now and when I first started I had my period for two weeks which I heard is normal then I had my period every other month until I didn t have it at all for 8months then I got it again for about 9days and then it became regular but last month I got my period two weeks early I thought maybe it was a cycle change but then 3days later I started bleeding again and then I went to see the doctor he prescribed me estradiol to help stop the bleeding and it worked after a few days but once I stopped taking the pills it came back every time so I thought this month okay I got my period again it was 7 days long I stopped bleeding for maybe a week or less and I m bleeding again now and it s heavy and I have pain in my lower abdomen maybe cramps? But I don t understand why if I already had my period? I don t know what to do