Agreeing with Davros that it's great to find others in similar situations, although varied in details, and yes, it's a real nuisance stocking-up for even a few hours from home. I will ask GP about Fybogel tomorrow.
All best wishes to wannabe for upcoming surgery, and I'd be really interested in the details whenever you feel like discussing same. Might ask GP about hernia surgery too, but I'm really scared about hospital again, particularly remembering the pre-cancer diagnosis when I was feeling ill, bleeding and blackouts, and they just got me stabilised and sent home while I was using the walls to stay upright, with instructions to see GP. Can't face another few hours like that, waiting for the water which only arrived when consultant passed by again - I could go on, hoping that no-one else here is using same (Northern) hospital.
I started with M&S underwear too, in fact, it's my usual as I've more than one size/strength. I've a SupportX item too, strongly reinforced, which requires huge strength to pull closed the fastening fabric, so I've stitched one in place and use pull-on system for this too. Not heard of the item you mention, R3, and think I'll delay decision.
As this can be such a personal subject, I'm wondering if we should ask to be moved to Off The Beaten Track, if anyone else is interested in continuing contact between us? Hope we all have a good weekend anyway.