I also experienced the same thing, but mine was for a long 7years. So you can image what I went through. I tried everything you can image. Mine is a better right now. I started taking vitamin C. It help build your immume system I bought it from Costco (500mg). 1000mg is also good. I started with 8 tablets in a water bottle (500g) drinked it 3 times a day and more water. It helped my constipation. I also eat Chick Peas. It takes a while to cook, but it helps alot. It has 56% of fiber and that is very good.
Don't loose hope, I know it will work for you. It did for me. I am now out there looking forward to a new life.