I'm 16 days late,my period is every 28 days, and its regular never late or early but I've had spotting that only last two days, wasn't a "real" period and it was way before I was suppose to even start. Im constantly goin' to the restroom, I calculated.. its every 15-20 minutes. I'm having a slight discharge and my breasts are definitely fuller than usual. Not sure what to do... get a test or what and see if I start when I'm suppose to.

All the symptoms you're experiencing can be either pregnancy symptoms or PMS. The only way to know for sure is to take a pregnancy test.

Make sure to use first morning urine as it's more accurate.

Good luck.