Birth control should I be happy?

Abbie

my mom went to the doctor today and I had to test my thyroid well when we were starting paperwork for today I was asked when was the 1st day of my last period I said Sept instead of Oct and mom got spooked and begging for the birth control for me after blood work I learned that my sister and mom talked about it without me so should I be happy or mad because I'm 22 and my body is mine not theirs