Nexplanon Period

Hi everyone! So I got Nexplanon on the 8th of December at the end of my period. About a week into the implant, I started spotting, and that lasted about two weeks. Now, on cycle day 38, my next period should be here, but I've yet to see it. I have had pms symptoms like sore nips, emotions, anxiety. Today I noticed that I'm starting to spot a little little bit again, and I'm not sure if that'll turn into bleeding. Has anyone had no periods after starting Nexplanon, but had spotting instead? Or anything similar to what I'm going through? Thank you!