Stretches and foam rollers I know a little bit about but thanks for the input.
I think doing squats with incorrect technique may have been the original culprit. But I rested straight away after that (6months ago)_ and it went away.
I've done nowhere near as much training this time round compared to last year and I think the legs were not prepared for the heavy load. Even though the head was!
I think it was probably being in too high a gear on a start off. Or being a bit slow on changing down on a steep hill when fully loaded.
Departure date was today. I had a flexible flight ticket so decided to put it back a week after speaking to the Sports Physio.
I've had plenty of aches and pains in the past but this just feels a bit "wrong".
If it was just cycling I wouldn't be that bothered, but cycling with 40kg load doesn't give much of a chance to ease off when the slope gets beyond a few %. (Well not for me anyway)
There is no quick solution. Perhaps I'll go on the flight next week and get myself somewhere sunny and have a rest and do part of the journey by bus?
I suppose SPDs allow for cycling with one leg