could i be pregnant???

its been about 2 months since i stopped BC on the 4th of July i had sex with my boyfriend (no protection) and he didnt "pull out" ...glow said i gad a 3%chance of getting pregnant...a coiple of days after tge 4th i took a pregnancy test and it was Negative but glow is telling me my period is 3 days late and also i usually have reallt bad cramps before my period comes and i havent had any cramps at all.... i plan on taking anotger test on friday if my period doesn't come on by then...COULD I BE PREGNANT???

UPDATE 7/14/18...

today is now 6 days late on 7/12/18 i tested and came out negative but still no cramps or period.. whwn should i test again??