I have suffered from terrible consipation for awhile now. My stomach gets so bloated at times as well. I think it may be stress (my husband died last year and I have 2 kids) but I really need something to get my digestion going. Anybody ever use it for this reason?

Vinegar is good for digestion, yes, even acid reflux, paradoxically. You only need about 2 oz a day, and it doesn't have to be cider.
But I would say that by the time you are bloated you need a more comprehensive diet plan. Plenty of whole grains (not bread) like brown rice, veggies with lots of roughage (but don't overcook the cabbage family (brocoli and cauliflower)), and a healthy fresh oil, maybe 2 T day in sauté, baked into dishes, or on salad.
It wouldn't hurt to start all this also with a little Beano and Colace for a week, without knowing how long it's been since you've been constipated.

And of course avoid red meats and fried foods and refined starches and desserts. And walk, walk, walk, with exaggerated strides.

I use ACV in my diet but not particularly for constipation.
One thing I do find very effective if that is a problem is a little root ginger. I usually add mine to a mixture of fruits and make a smoothie.
Do make sure you are eating plenty of fresh fruit and veg and drinking plenty of water too.
It might also be worth while trying to keep a note of what you have been eating whenever you get bloating in case a particular food is triggering it.