CAD? Check out the low carb plan choices link on the right. It really comes down to 2 low carb meals a day and 1 reward meal (balanced carb, fat, protein but eaten within one hour).

Regarding the never going to the bathroom. You should really have that checked out.

If you ate cups of veggies daily, drank lots of water daily and exercised then there is medically something wrong. I do all that and take two psyllum husk capsules a day for fiber and never had an issue.

All the best...