I m 52, female, 128 lbs, great health. Have IBS w/constipation. Have about 2 events per year with IBS attacks where I cramp and am on toilet with the runs. What horrible is a sweat profusely, get weak, light headed and feel like I ll pass out. As soon as I get rid of it, I slowly start to feel better. Why do I sweat and get so weak ... is it my body reacting to the event? Just want to see if it s a heart issue as well. Thx