 [ Symptoms ] how long after i stop taking phentermine when is it safe to try getting pregnant [ Disease ] hi did some research and they general thoughts are around a month to really be on the safe side so if you have been then now is the time to start your family but if you have lost weight do eat a good healthy diet none of this eating for two eat healthy stay healthy do not forget to get out and do some kind of exercise even a good walk will work wonders for you do hope this helps you good luck