Nexplanon

Momo
So I got on this birth control on January 29th. I have been having super irregular bleeding since then. Just this last week, I stopped bleeding, which was wonderful. It's been almost 3 months since I've had it. Yesterday, my bf cummed in me, which I allowed him to do, and I already know that was a VERY bad decision. I know the birth control is 99.8% effective. Should I be worried?