Is your trainer getting a kickback? I can't imagine any other reason he would recommend it. It's not a good product. It's filled with stimulants and bogus ingredients. If you have a hormone imbalance, you really should see your physician and not a trainer.
Btw, 17 pounds in 2 months is phenomenal! You should be very proud of your progress

It sounds like you are doing something very right, without pills.
