Venting

So went to the doctor today to discuss weight loss. I have tried diets and failed so I figured get help. We were taking and first he started to say I was prediabetic then he had to go check and come back nope everything blood wise appeared normal. I asked about pcos and if he say saw an abundance of cysts he said no... he said only things may be hindering is my weight (70% chance) or my husband’s sperm (30%) so... he prescibed me adipex and said stick to a 1200 calorie diet. Any one have experience with significant Weightloss on this? I so want our miracle baby and I need some help.