I’m 15 years old and I recently lost my virginity

Patient: I’m 15 years old and I recently lost my virginity to my boyfriend on valentine’s day. A week later I started stressing out thinking I might be pregnant and a couple days ago I “thought” I was having symptoms but it was just me freaking out. My period is a couple of days late and I’ve been having frequent vaginal discharge. Also I’ve been kinda gassy lately. Should I be worried?

Doctor: