"my first month i lost 17.8 lbs. the weight just fell off.  in my 2nd month now and my weight is stuck.  i drink lots of water eat what i&#039;m to eat and i don&#039;t know what else to do.  i&#039;m to lose 4 lbs. this month and i have 2 weeks left before i go back.  any ideas what i need to do to get this going again?  i take a half of phentermine in the morning and a half in the afternoon due to having tightness in my chest the first month."