questioning sexuality

hi i’m a 16 yr old girl and i can’t stop questioning if i’m bi. i’ve talked to my mom, my best friend, even the guidance counselor at my school. everyone has said the same thing that this is a development stage, it’s normal to question, just live your life, etc. i try and try but for some reason i can’t just move on with my life. i don’t think that i want to marry or date a girl because when i think about it i just feel nothing but i get turned on by watching girls do things or thinking about it. i look at girls bodies and i admire how pretty they are or if they are attractive. i just don’t know i don’t like feeling like i don’t know but i also don’t want to be bi, i feel like if i was i would have this much of a struggle that i would struggle for a little but eventually accept it i just can’t accept it. i’m okay with saying that i’m questioning but actually saying i’m bi doesn’t feel right but if it doesn’t then why do i keep overthinking