Whenever I go out my stomach starts twisting and I need to poop. But it never happens when I'm home. I have chronic constipation. Please help.?

Bowels. Sounds like you have an issue with anxiety/irritable bowel syndrome. I would try and treat your constipation by increasing your fiber intake daily and increase your water consumption slightly. If you are more regular at home on a daily basis, that should help you overall I hope.