Mom won't let me approach her about my mental health

Wanted to start by saying this is my first post, sorry if this isn't the right sub for this topic.

Anyways, I (f14) have been struggling mentally for a very long time now. I am not trying to self diagnose myself by any means, however I think it's possible I may have depression and/or anxiety. All I know is that based off what I've heard what I'm going through is not normal behavior.

I have brought this up multiple times with my mother asking if I could get tested or at least talk to her or my doctor about what I'm going through so she could understand. But she always replies with "you're fine you dont need to be tested." Or "you're looking for attention it's probably just that time of the month." But when I try to tell her that I've been like this for years so it isn't just hormones she flat out says "you're wrong."

A lot of mental illnesses do run in my family so I thought that would be reason enough to bring it up with my mother, though she refuses to listen whenever the topic is mentioned.

I'm not sure how to go about this as she isn't willing to listen and will not let me speak about it to my doctor, does anybody have any advice?