No bowel movement-laxative dependant?

In june I stopped supplements for chronic fatigue. I was taking them 2 to 3 times a day and had about 2 very regular bowel movements a day. After I stopped them, my bowel movement stopped. Did I loose my perastalsis?
I have tried psyillum and fax but I become allergic. I am currently taking magnesium daily to go. Sometimes I still don't go. Help this is driving me crazy. I am on anxiey meds. I never feel like I have to go unless I take the magnesium. Any input would
be appreciated.