You might want to increase your fiber to help with digestion. For some reason carrots seemed to be the best dead parasite cleanser for me. Just two or three full raw carrots. You will feel worse at first but it is just because stuff is passing. It got better in about two to three days. I noticed an increase in gas for a day. Also, your gas is probably dieoff related. Eat fiber throughout the day.
My stomach hurt and I had what I like to call "releases", basically a large Bowel Cleanse due to irritation; mainly in the morning. It only happened while I was doing the parasite cleanse. I normally do not have digestive problems.