this might sound stupid but...

i come from a very strict christian household and are very “no sex until marriage” and i was too, but well.... yeah it was in the moment and i am on birth control, and i use it every day, i haven’t missed a pill in months. but i had sex for the first time about a week ago and instantly regretted it bc i felt guilty and am beginning to over think about a pregnancy scare or if my antidepressants might’ve canceled out my birth control. i began to notice my body kinda changed or i became like really bloated around the pelvic region and i got super super scared. my breasts look different and everything looks like it’s getting puffy. am i just super paranoid and overthinking? is this normal? please help!!

-yes i know this sounds ridiculous but i was raised in a family that didn’t teach me anything about sex. i have been trying to figure things out myself, my apologies if i sound stupid.