help help

okay, so i’ve been having this problem and i don’t really know how to explain it. i’m 16 and i don’t know how to bring it up to my mom and i’m too scared to see a doctor. like i’ve brought it up to my mom before but idk. but i’ve had like this fishy smell for the last 3 months and i have no clue why, and sometimes my vagina burns or is itchy and i keep thinking it’s a yeast infection or UTI but i don’t think they last this long and i just want it do go away. please help me get home remedies or home advice or just something please cause i honestly do not want to go to the doctor and i have no clue what to do here. i just want it to go away.