So this past month I was living with my boyfriend...we were having sex a couple of nights but I made sure to take morning pill frequently .now am late on my periods by 4 days.i have taken two pregnancy test apparently passing a week between each and they all came out negative.i really don’t think I am pregnant but it still scares me .could it really be the morning pill delaying my periods this much cause my periods are irregular but they never come late.....only earlier and all this starting to freak me out