Hi, I Am 16 Years Old And I'm Trying To

Hi, I am 16 years old and i'm trying to switch over from tampons and i have already went through a whole box trying over and over again and no luck, i've used a compact mirror and i have an annular hymen because i've seen like a doodle of it and i compared but i still don't think it makes a difference, i'm not having any pain when i try to insert it but it just doesn't go to far inside... i've also tried with my finger and the same thing, the flesh or area inside of my vagina feels really thick and its frustrating me because i would like to be able to play sports soon and i can't if i wear pads, and plus i dislike them very much, i just need advice on whats wrong. thank you!