I Have Had The Nexplanon Implant For Two Years. The

I have had the nexplanon implant for two years. The past few weeks, boyfriend and I have had a lot of sex. I just had my period last week. I know that nexplanon gets everything out of whack but I'm feeling pms coming on again. Sore breasts, eating everything in sight, and quite grumpy. I just so happened to have a pregnancy test in my bathroom and used it this morning. By the time I got back home from work, there was a faint positive sign. Could this be wrong???