Duromine 15 mg not working?

Hello,

My weight is 68 Kgs and im 20 years old. People may think im not overweight, but my BMI shows im overweight and i want to lose around 10 kgs.

I started duromine yesterday, 15 mg, and i cant feel any effects of duromine. Not feeling awake, no headaches, no dry mouth, no loss of appetite. Does this mean it doesnt work? or am i just lucky not to have any side effects.

I know this is only my second day, but a few people i know that have been on it, felt awake on the very first day!

Please give me advice, do i go up to 30 mg? or just stick this out and see if will start to work...?

Cheers.