New set of worries for a girl who already worries to much.

Well its been awhilesince I posted on this site. I hope I can use it more to express what I am feeling. 
I just got diagnosed with PCOS and I think I am borderline diabetic/prediabetic. 
Im having a hard time with dealing with all of this. I have to check my blood sugar once a day / 3 days a week. I guess because when they did blood work it came back high. Now I am scared. I am overweight so I know that has to do with it. I have tried and tried to lose weight and yet nothing. So I am obviously doing the wrong thing. I feel hungry all the time. I try and eat breakfast lunch and dinner after dinner the appetite seems to awake and all I want to do is eat. I feel bewildered. I feel lost and confused.