Hi Jennifer!

Anytime you drastically change your diet (what you eat), changes in bowel habits can happen; either constipation or diarrhea. Believe it or not, the same thing helps both conditions...fiber!
Fiber helps to soften hard stools and keep them moving and helps to give bulk to loose stools.
There are several things you can try..there are fiber caplets, sugar-free Metamucil and plain psyllium husks that you mix with water and drink. If you do decide to try a fiber supplement, make sure that you drink plenty of water as well.
If you're not eating enough veggies (or any at all), adding more can often help as well.
Hope you're feeling better soon!