Oh Gill, so sorry.. will keep everything crossed for a quick recovery..
I don't know if this is related at all but mine were both under the weather and sick with brown sludgy stuff last week but not as bad as Vegas sounds.. I found out they'd been eating bluebell shoots and bulbs
It might be worth checking your garden.. they've both recovered fine and given up this little delicacy but it was quite grim
Get better soon Vegas
Hannah x