I was on Nexplanon for 6 years with no periods. I got off of it in may and started having a period the week after and then every month after that I started have periods close to twice a month. Well I had sex on September 12 at like 1:30 in the morning. The app said my period was do that next week but I ended up with spotting a few days after being late and got my period the following week. It was like normal and lasted 5 days. Fast forward to October 10th I had clear/old blood then had old blood for several more days after that till about the 14th. Well the app said I was supposed to start my period today since about the 20th I have noticed very very little blood but haven’t started my normal flow yet...I did take a pregnancy test this morning and it said negative.