Hi. I've struggled with constipation. I have ibs too so its difficult. I'm sure a lot of my constipation is due to removing fruit from my diet. I eat veggies but the band makes it hard to get enough in. I take a daily probiotic. I have bio kult cuz its a multi strain & it works better by far than any other probiotic. It really helps. I also take lepicol (its psyllium husk, a soluble fibre) every 2 or 3 days & now i have no problems at all, no pain, no bloating, no straining etc. i still do not 'go' daily but I'm sure my reduced food intake is the reason. I find if i have harsh fibre like bran that it actually makes things worse!
It took a good 2 or 3 weeks of this regime to start working but I've been doing it for about 3 months now with no problems at all & when i do 'go' it's completely normal.
Hope this helps you