Went to the pool not knowing what I was going to do. I thought i'd give it an hour and see how it panned out - didn't have any problems so kept going. Tumble turns every end which is not bad, i've only been doing them for a couple of weeks.
The biggest observation was my left shoulder got better and better. Only to be replaced by a similar pain on the right! The left seemed to improve as my rotation on that side (left side down) improved, and the right pain came on when I could no longer keep my right arm straight on extension. No lower back pain either which I had got on these longer swims - I think that is due to trying to rotate to breathe rather than lift my head.
10km still feels like a long way!
Other things going on - I am starting to worry that I haven't had my acceptance for the marathon through. No luck on the phone - just a recording. Apparently they sent them in March. I filled it all out and paid so can only hope I have a place.