Spotting vs period

Emmerson
Are there any telltale ways to determine the difference between spotting and your actual period? I just got the implant about a month ago, and I've been for sure spotting for about 2 weeks. However, my period was supposed to start about 4 days ago, and I don't know if I'm still just spotting or if it's real... it's still really light. I just can't tell. Also, do you think I should go to my gyn or do you think it'll figure itself out in a month or two?