Hi! My Name Is Mariana, I'm Worried Because In October

Hi! My name is Mariana, I'm worried because in october or so I took the next day pill because i wasnt sure about what had happened the night before and then on december 2nd I lost my virginity and my boyfriend cummed inside of me and i took the pill again, this happened on the very next day of the end of my flow. 1 week after that i got another period. was it because of the pill? then on january i got my period as usual and on the unsafe days me and my boyfriend had sex. We used condom but the cum got out of the bottom of the condom. I've been feeling wierd ever since, is it my paranoia or am i pregnant? how can i know?