Evaluating my chances for a VBAC

Hey all you MWs, doulas, etc. I am hoping for some encouragement and thought y'all might be able to give me some. I am planning on a VBAC, hospital birth w/supportive OB, and doula, anytime in the next few weeks or so (I'm 38.5 weeks, so whenever baby decides it's time!). I am trying very hard to be positive and believe in my body but as my EDD draws nearer I find myself less able to trust my body and I am more and more afraid of repeating what happened with my son.

In a nutshell, I went into labor w/him at 38w5d. Contrax were mild most of that day but picked up big time by the next morning. By that afternoon they were 1 min long and 2-3 min apart and had been for several hours. And they HURT! We went to the birth center that evening, I was checked and was 2 cm, sent home, told it was prodromal labor (I still don't buy that) and to have a glass of wine and relax. Well, if anything, contrax got worse and we were back at the birth center a few hours later. No progress. Baby's heartrate had decels and I had a fever, so we were transferred to the hospital. I was getting really tired and discouraged. Contrax kept up at this frequency all night. At first I refused the epi and just had fentanyl; it did nothing except keep me in bed. (I also had an IV as I was GBS+.) By the next morning, after being in the hospital all night, I was at maybe 3 cm, baby still high at -2 station. I hadn't slept in 2 days so got the epi. Checked again, no progress, baby still high. At noon I was at ~3.5/4 cm. OB broke my water, had mec staining. I asked for pit to help, was given a pit drip, at 3 pm no progress, section was recommended, that was that.

(Not sure if this is relevant but DS aspirated mec, had pneumothorax, spent 5 days in the NICU. Awful. )

Anyway, my current OB (not the one from DS's birth) is pretty supportive and thinks I have a great chance at VBACing this time around. But I am looking for some encouragement here too. I only got to 4 cm, and barely that. Can someone please reassure me that it doesn't mean I can't progress further? I don't think baby was posterior as i don't recall back labor, but my gut says he was not positioned properly as he never descended into my pelvis. Just because *he* didn't descend doesn't mean this one can't too, right?

I apologize for the length of this post but I am just getting really nervous and am having trouble believing my body can do this. Any type of encouragement would be VERY welcome. Thanks in advance.