Possibly pregnant at 16

I (f16) might be pregnant and i’m so scared and can’t tell anyone. I just need to get it off my chest and need advice on life. I had sex 6 days before my period (contraceptive broke without us noticing) , bf bought me plan b, and i took my birth control. But i still haven’t got my period and Im terrified. I also got really sick randomly last night and was throwing up and having cramps. I just know if i was pregnant i would be a disappointment, especially to my dad. he had a terrible childhood and ended up being a single teen dad twice at 17. So he gave me everything to set me up for success unlike he had. I also go to one of the biggest high schools in america with over 3,000 students. I could not show my face at school again. Me and my boyfriend have also only been together 8 months. please give me some reassurance since i can’t tell anyone beside my bf.

part 2

after days of crying my period came thank you all for your support