Nexplanon not working anymore

So I have been on nexplanon for 2 years and i never had a period since it was pit in. Well my boyfriend and me have been having sex like crazy 2 to 3 times a day and he will finish in me. We don't use condoms just my BC but about a week go i had a period. It was 7 days long which is longer then normal when i use to have periods before nexplanon and then while i was on my period it would stop then start. But after it was over i had some white discharge. Is it possible that my nexplanon stopped working and that I'm pregnant. I'm having symptoms like my other 2 pregnancies. What should i do?? Is it possible I'm pregnant??? Very scared!!! Please help.