When I Was Takeing My Diet Pills, Excuse Me I;m

When I was takeing my diet pills, Excuse me I;m on the now, but my doctor has me on Phentermine 37.5 mg. n the after noon my other dr. had me on that also for afternoon I took a small yellow pill that started with an P and had a z towards the end. I found one today in one of y other purses. They really help my afternoon graving. This pill is small round pill, plain on one side and the other side is really hard for me to read. I.ll try . It's looks like GG or line and 21?