I'm due with my second in August. At this point I am planning on, and my doctors see no reason why I can't, VBAC. But, my first was 13 lbs, 8 oz. We had no indication she was so large - I measured pretty much on track, no sugar problems, no problems whatsoever. I gained maybe 70 lbs, which is a lot but certainly not unheard of. I had no ultrasounds. Big babies run in both families (9-11 lbs), so I expected a big one, but not that big. I'm very scared it's going to happen again.
So far, if things stay on the track they are on now, I'm anticipating a 35 lb total gain. So half the weight I gained the first time around. I had an ultrasound at 20 weeks, and at the time they said the baby was measuring at about 1 lb, which I'm to understand is large but not scarily so. I've measured ahead at my last two appointments - I was 27 cm at 24 weeks, and 29 cm at 28 weeks. I'm getting weekly adjustments from my chiropractor, which I'm hoping will help me avoid the back labor and malpositioning that contributed to my c-section.
My hangup here is while I don't want a c-section, I'm also afraid to vaginally birth a child over 12 lbs. I'm scared of the possible damage - cervical damage, incontinence, tailbone damage, broken shoulders, broken collarbone, or dystocia. Which I know, I know can happen with babies of any size. And I know that fundal measurements and late ultrasounds are not really very accurate, but there's no other way of estimating the size. I know that I will be waiting to go into labor on my own no matter what I'm told to expect for size, but I'm both afraid of vaginally birthing another LGA baby and afraid that this fear is going to lead to me somehow sabotaging my VBAC. And I know I'd be beyond pissed off if I gave in right away and was sectioned for a 10 lb baby.
So I guess what I want to know, is there a point where your caregiver tells you a size number that would make you just not want to do a vaginal birth? Or would you just stick it out, hope for the best, and see how the labor progresses? Do some people just grow freakishly large babies for no reason? I don't want this hanging over me anymore but I don't know how to let it go.