so my last period was feb 3 i had sex feb 14 & feb 14 started bleeding / spotting at 8dpo for three days took a test the 3rd day and digital said “ yes 11 days later which was last sunday i took two more test but it was flat out negative no 2nd line , took two more two days ago still negative but i haven’t bled or felt bad cramps and according to this app im two weeks late now im so confused wouldn’t a chemical pregnancy mean i would’ve got my period a few days after my normal period or a week later ?