New to forum, not to site lol

I have been using this site ofr a while, but I have never introduced myself. My name is Amy, Im 28 5'4 and about 242. I have to loose weight, for my health. At first i wanted to loose the weight so I could feel better about myself. Then on June 10th i found out that i was preggo!!! Oh we were so excited. On Jusly 9th, no heartbeat was found and surgery followed two days later. As you can imagine, we were devistated. After the surgery I had to do an MRI and bloodwork. Im sure no one cares about my infertility issues, but what should be a concern is the fact that I have now been diagnosed with borderline diabetes. Now my OB seems to think that by losing ten lbs I will no longer be borderline. Now here is my concern. I def want to lose the weight so I can get as far from diabetes as possible. But if I get pregnant again, weight gain will be too scarey at this size. I dont want to develope gestational diabetes. So I hae set a new goal for myself. I am hoping to loose 30lbs by my birthday, Sept 24. Does this sound reasonable????