Activia for constipation?

Well I'm trying to keep as much as possible away from taking medication for things that can be resolved other wise. I've been constipated because of pregnancy so I picked up prune juice and I know activia is supposed to regulate your digestive system so I bought it. I was really dreading tasting activia because it's full of more live probiotics than other yogurts and I'm kinda iffy about yogurt but it's freaking delicious! I've only had the vanilla but it's soooooooo good. I hope it works because I can gladly eat one of those a day. Now I'm off to the prune juice which ive also never had before. Anyone found anything else helpful for their stopped up digestive system while pregnant? Has anyone tried activia with good results?