I am on Nexplanon and I have been on it for 7 months. In the first week of November, my period was cut short after 3 days but I haven't had sex and my discharge also thickened (I know that nexplanon thickens CM). On the 11th of November, I had sex and he pulled out and we only had sex ONE time that day, but i'm pretty sure he pre-ejaculated in me. I was supposed to ovulate on the 17th but on that day my discharge was thick and tacky so I don't think that I ovulated. Today is the 2nd and i'm cramping and spotting but my period is due today. I checked my discharge and it was brown.. is this just the spotting before my period or is this pregnancy?