same thing happened to me. I started getting excessive gas and my digestion got weaker. I gave it about a month and 15 days and exercised daily. I started looking pale and yellowish so I gave up. It sucks because I did feel a lot of energy at first.
I think a problem commonly overlooked and is involved with me and some people who never seem to improve is a mold sensitivity/allergy. My digestion improves drastically when I'm not home in the wet lands.