Now remember, each body is TOTALLY different.
I am older than you most likely and my metabolism has decided to retire.
I knew I used to lose weight in a flash. Now I lose only if I work out at least an hour and a half every day, and I cannot eat more than 1200 cals a day.
Smoking is NEVER worth it.
Its the most deadly thing we can do to ourselves.
You have only stopped recently, well 9 mo's.
YOU may recover your metabolism incredibly.
I believe it can take up to a year.