HELP! period lasting for more than a month

ok so my period was late by a few weeks which is not normal for me (i’m 17 and a virgin so pregnancy was out of the question) when my period did finally come i thought it would just be normal but i was soooo wrong. i’ve been on it now for a little over a month and it’s heavy with a lot of clots, sorry if that was a bit tmi but i’m really worried. what should i do? i’m scared to go to the doctors because i’m very uncomfortable and embarrassed to let someone look down there.