Totally weird but three days ago I had light brown watery spotting that lasted maybe half the day and mild cramping I was freaking out and ran to the store to buy tampons. That was on cd 17 now on cd 20 and still no period it isn’t due for 11 days. Should I take a hpt or wait till closer to my period due date. I’ve been reading all kinds of things online and I’m afraid I’m not getting the right answers