Not again! Gestational Diabetes

I went to my 28 weeks diabetes screening test last Tuesday. Well, I got a phone call early this morning from my Doctor with my result. I basically failed my glucose test!!!! Not again!!!!!! I had gestational diabetes with my first daughter and I was hoping that I do not get one this time. I am so upset. I was right at the border line, too. Now I have to go through gestational diabetes education and change my diet. I know the routine but my doctor wants me to get educated about it again to refresh my memory. This pregnancy has been really tough. Now I have anemia, placenta previa and gestational diabetes. I hope that problems stop here. I can't handle anymore complications/problems with this pregnancy! I am also worried about my baby's health as well. Wish me luck to have a nice healthy baby in 13 weeks!