Preparation for VBAC???

Hello!! I am currently 20 weeks pregnant and want to ask a couple questions to those whove had successful VBAC and those who haven't.. Ok heres my story.. Sorry so long!! Well my first pregnancy was induced x 22 weeks because of severe preeclampsia (pregnancy induced hypertension). Well the baby which was a girl did not make it.. That was a l delivery. Second pregnancy I started seeying a perinatologist which helped me out through my whole pregnancy and found out what couldve caused the preeclampsia.. I have a blood clotting disorder. So I was put on blood thinning injections. Time for delivery came and It was a c section x 36 weeks because my OB was out of town and his replacement which had no idea of what was going on with me decided not to let me labor!! Well me thinking "Doctors" know best I let him do the C section. Now its been 11 months exactly, and it would be 1yr and 4 months after the c section by the time i deliver. Well I found a doctor that will let me try the VBAC a