irregular period

Not

So ive had my period for about 5 years or so give or take, and its still not anywhere near regular. I have yet to have 2 months in a row having a period. Its been about 2 months since my last (almost 3) and i just dont understand. I talked with a doctor and she said it was normal!!? that doesnt make any sense and i feel like there IS a problem. she didnt check anything she just went based off what i told her. i told her how long ive has my period and about how irregular it was, all she said was that it was normal and it will take a few more years, which doesnt sit right with me. not to mention that when i do get my period its almost unbearable, i get extreme cramps to the point where i cant get out of bed at all. i feel like there is a deeper issue but i cant get my mom to ever make me a doctors appointment. please help me idk what to do.