My endocrinologist said in May that my period would start after 6 months

Okay, so your endocrinologist said your period would probably start about 6 months after May, which means sometime around November. That's actually super normal because lots of times doctors can give you a general idea of when things might happen, but bodies do their own thing. It's like a prediction, not a super exact calendar date.

Puberty is wild like that. It unfolds differently for everyone, and even if doctors see signs that your body is getting ready, there's no exact time stamp for your first period. Some people get it earlier than predicted, some later. All those changes happening inside you, like hormones getting cranked up, are working on their own schedule.

You can keep an eye out for other signs that your period is getting closer, like if you're suddenly getting taller really fast, or if you notice some white or yellowish discharge in your undies. Those are usually signs that your body is in the final countdown to your first period. And don't stress if it doesn't happen exactly when your doctor said. Your body will get there when it's ready!

If you want to kinda guess how close you might be, there's a quiz on this site: how close is my first period?