missed period/BC

anonymous • 23
i was supposed to get my period around the 10th, and i didn't. had sex april 17th(and others but i feel like right now this date is the only one that's relevant), so a month today. i took a pregnancy test friday (5/12) and was negative. took one today 5/17 and also negative. i also got one 5/1 that was negative
i am on a low hormone birth control and have been on it since Halloween 2016. have used a condom every time.
 this is the only time i've ever missed a period. my gyno said that this isn't uncommon for girls to tell them they've missed or were spotting and they tell them to test and if it's negative they just didn't get a period. i'm still lowkey freaking out. someone help 😅