Should I be worried or am I being paranoid.

Sooooo I started taking birth control pills around mid august, and I kept getting the brown period thing every month. I called my doctor in November asking why this was happening and she said that my body hasn’t gotten used to the hormones not to worry. Fast forward to now, and I haven’t gotten the brown period thing this month....

I took a pregnancy test 3 weeks ago, negative, I took a test a week ago still negative.

Should I be worried? Or is it my body finally accepting the BC and allowing me to “skip” my period. Thanks y’all 🙌🏻🙌🏻