My boyfriend and I moved in with my parents about a month ago. About a week in%2C he started experiencing foul smelling gas. Well.. we all smelled it. He was extremely constipated and in pain. We all assumed it was because he wasn%27t used to the foods we were making or even really eating at all.. I myself started to have the same problems. But my abdomen hurt.. his passing gas has gotten better but his constipation is still there.. mine got worse before it got better. My farts still smell rotten but I%27m not as constipated.. I am nauseous and my lower back hurts. The only reason I%27m concerned now is that my mom is experiencing the same problems.. flu like symptoms %28including a fever%29 but also constipation and foul smelling farts making her feel nauseous and her back hurts. Is this something I should be worried about%3F Did he infect me which in turn infect my mother somehow%3F What is it%3F