New to the pill

My boyfriend and I have been together for a year, he took my virginity, we have sex unprotected all the time. He always pulls out, my periods have always been consistent for the most part. It’s been 10 days late before, now I’m on birth control and this is the 2nd time I been on it but my first time being so consistent. I’m on my 3rd week of it, almost to the white pills in my first pack for 3 months. Should I be worried about my period being late? Should I get a pregnancy test? I threw up this morning, but sometimes I do that since I’ve gotten my appendix out, like it’s not abnormal for me to throw up. Idek if I’m overthinking or what.

Please help.