spotting or period!? TMI

Hailey

So today made 18 days late on my period, & I've had a hard time with home pregnancy test.. & Im either spotting or got my period... could i be spoting?? its like a brownish stain mostly more watery. could this be my period?? or could it be pregnancy spotting?? I have an appointment Monday & dont want to waste my time if its just my period😕😕😕 help!!