Need advice to talk to my mom

As some people know I want to be able to have kids but there may be something wrong with me to do so. I'm only 16 (17 on 10/31) and many people on here suggest for me to go get myself checked/tested to find answers. My moms really difficult to talk to. We argue and fight about everything (mostly bc of her) and I don't know how to go about this to her so she can take me to the hospital. She won't take me serious about this. If there is something wrong then she'll go tell everyone and everybody on our tiny reservation will find out. How else am I going to get help? Or should I leave it alone and live with it? What are ways I can talk to my mother so she can take me serious? What to do!?