"i had my 1st child in january of this year. i gained a total of 45lbs, bringing me to 195lbs at the end of my pregnancy. i am only 5&#039;4. i started phentermine on the 21st of september with a weight of 186. currently i weigh 179. that&#039;s only 7lbs in a month and a half. i lost 5lbs the 1st week i used it. i did eat very little and went to the gym 5 x that week and have only lost 2lbs since then, which have been up and down, with those 2lbs. i am getting very frustrated. i have cut down my food intake and have been exercising, not at much as 5 x a week, but have been going to the gym. my doctor told me to take only half of the pill(37.5mg), but now i am starting to crave food, unlike before."