Need help/advice!!!

I guess i can call this having a nervous breakdown😥 I was going theough my pictures and I saw in one of my pictures that my 3 year old baby cousin took of me, and I saw how much weight I have gained. I just deleted the picture and started crying and have been crying ever since. Now you're all going to say instead of crying why don't you do something about it! Well I have PCOS and I have tried every diet there is out there and it has not worked for me. I gain the weight back and i have gained a lot more. My husband and I also are teying to conceive, and I am taking metformin, but I know that if I dont loose some weight I might not be able to conceive. I don't think I want to conceive while I am this size. My doctor also told me that if I don't lose eight my child might come out with diabetes, overwight, or heart problems. I dont want to do that to a innocent little thing. Im at at point that I just dont know what to do anymore. I talk to my husband he keps saying everything is going to be fine. If you have any advice, or if anyone is going theough the same thing please feel free to comment.