Hi guys

Would like to seek for advice / opinions if lady period delay quite some times, around 6 months. Any ways else can solve this problem? Hope to understand more. It's not me, asking on behalf for my Girlfriend.

Basically it's not pregnant, so any comments related to that will be ignore. For those who can share likely appreciate it. As woman didn't come period sometimes emotional up and down tend to think much. So I want to clear her doubts.

Many thanks if you could suggest any expertise / clinic or anything else that can be shared. It may be useful incase others may need it as well.

Weight I think it's normal. 50kg+-
Stressful most likely tied up with college stuffs
Don't have regular time for sport.
Even sleeping time also late.