So my last period was the January 19th. Im usually 4 day period with 28 days between, so i would start on the 16/17th. Had sex on the 28th then I took an ot on the 30th got a strong positive very next morning i got a negative so i guess i missed it. I then had sex on the 4th which is day 16. Now today 11th 6 days before aunt flow is supposed to come i am having spotting. So my question is could it be implantation or is it most likely my period? At first the app was saying im 2 days away from period so i took a test and it was negative, but now im thinking maybe i wasnt 2 days away and im still 6 days away.