Well after my eureka moment last Monday when I went! After 21 days off constipation things have stopped again. I haven't been now for 6 days I've been taking the magnesium citrate up to1600 mgs in one day. I'm now concentrating on drinking much more water to see if that helps.
I took a diary of my lack of movements and all the laxatives I've taken but as I'd had a bm that morning he didn't seem interested. He was more interested in the pain medication I take for my fibromyalgia.
No offer of further investigation. It takes about 3 weeks to get an appointment so I guess I'll just have to suffer and chuck more useless laxatives down my neck.