It's come on just this evening and I have no idea why!
It's weird because I've had some more than average wind (sorry, gross!) and weirdly, so has my other half a little. I thought that was just it, but I just got up, made a cup of tea, and sat back down and got quite sharp pains.
I haven't been for a bm* yet, but the n* is coming too. I don't know what or where this has come from which worries me the most.
Any ideas from my fellow emets?