"i am a 31 yr old female, i weighed in at 207lbs and a height of 5&#039;3. i started taking phentermine 30mg around may 15th. i went in for a 30 day check up and i was down 17lbs. i wasnt hungry at all, most days i wouldn&#039;t feel like eating untill lunchtime, then i would take a pill with a bottle of water before lunch then eat a small lunch, and an even smaller dinner.  i would try to walk for 20-30 minutes a day, sometimes more, sometimes i wouldn&#039;t get a chance to walk at all. the doctor was very pleased, as was i. he perscribed me for another 30 day perscription... but... i have done everything the same this round and haven&#039;t lost any weight at all. i have even threw in some extra walking. has anyone else experienced this?"