hello! i’m 16 years old and recently just began to get intimate with my boyfriend! i’ve told my mom about it and she asked our gynecologist for birth control options. we’re going to go through with it but idk when, is there anything i should expect when on birth control? i’ve been over weight my whole life and it’s really hard to lose it due to my insulin resistance ( my body can’t process glucose so it makes it fat )

will my weight sky rocket and make me heavier? what will happen to my hormones? will anything get bigger??