I was experiencing extreme bloating for about a week. I tried a laxative and stool softener recommended by a pharmacist, which had little or no effect. I finally had a bowel movement, big time, and then purchased Align a couple of days ago. It seemed that it was working, but today, I could produce just a stringy movement which looked very dark. Naturally, I'm very, very worried about cancer. Are there other possibilities to explain this?