Hello. I am 16 years old and sexually active. In the month of February I had protected sex the weekend before I had my normal period (2/10-2/15). I then had again protected sex on 2/18 after my period was over. Time passed and on both days of 3/4 and 3/7 I had protected sex again. We used a condom, I am NOT on the pill and he finished inside but with a condom, which did not tear or rip. Well an app predicted my period to start on the 13th of this month and well, it s the 18th now leaving it at 31 days into my cycle. I am often irregular. Each month is different, some are as low as 23 days and other 30. I am four days late and I am very scared. I have mild cramping, but that s about it for symptons. I know stress can delay your period but I can t help it. At this point, how soon can I take a pregnancy test and have accurate results? Can someone please tell me what is going on. Please.