Wow, I can kind of empathize with your situation.

When I was a student at Uni about 10 years ago, I had bad sleepless nights. At times, I would sleep a total of 4-5 hours a WEEK!.It was crazy, sometimes I went to classes like a zombie. I would write notes from lectures and fall asleep halfway..and my writings would be some mish-mash of notes, scribbles and doodles.

I don't know if it was insomnia because I never went to a doctor to get it checked and diagnosed. I just blamed stress and working part-time as the reason for my sleepless nights.

There would be times after classes that I felt so sleepy but because I had to revise, I'd force myself to stay awake and take half-hour power naps instead. Then when it got to bed time I just couldn't sleep even when I was exhausted.

I tried some natural remedies like essential oils, mild sleeping pills and working out before bed but it never really solved the problem.

Then, 8 years ago I got married, had three kids along the way...

PROBLEM SOLVED.

Now I can fall asleep as soon as my head touches the pillow; it's crazy

On a more serious note though, because I know how it feels, I think you should consult a doctor. I think Malaysia has an equivalent to a Sleep Institution too..

http://www.sleepsocietymalaysia.org/

All the best buddy!