13 years old and i haven’t had my period in about 6 months. Is this normall ?

[shawtya]

So, i started my first ever period on October 27, 2017 and it lasted 6 days. It’s now the middle of April 2018 and i still haven’t had one since. I’m DEFINITELY not sexually active and not pregnant. I visited my doctor early March and they said that it’s completely normal and that it might just be an irregular period, but i don’t think so lol. I’ve searched up my symptoms plenty of times and get anxiety just reading them off hahaha. OH and just another thing , i was changing and noticed that there was a sort of brown discharge on my underpants, is this normal too ?

[dominosarah]

It is very normal to have irregular periods for quite awhile.  The discharge is also normal.  Are you active or in sports?