Hi! I had nexplanon insterted on March 25th (which i wasn't on my period when I had it inserted), I had a period that lasted about 9 days on April 11th to April 20th. I had sex on the 21st. I had brown discharge for about 5 days after that. Now it's been time to have my period on the 11th of this month (may 11th) and I haven't had it yet. I had sex on the 16th and some brown spotting today. Is there any chance that I could be pregnant?