Confused if I’m spotting or having a period


So I’m 2 days late for my period but when I wiped later on this afternoon I had a sticky brown substance when I wiped, now later on in the night with a panty liner I am lightly bleeding but it’s more a brown then red/pink I have stomach cramps now but they have been on and off the past 2 weeks, I’m so confused as usually when I have a period it’s on time and I bleed quite heavy