I am 22+3 and my legs ache all the time - sometimes it's a dull ache, sometimes proper cramps, but it's very annoying. I asked my midwife about them today and she basically said it's par for the course and as I'm quite small my body will have harder work adapting to the extra weight.
I teach, so I am on my feet quite often, even when I take it fairly easy in lessons I have to go up and down stairs a lot and spend a lot of my time going from one building to another (work at the biggest, most spread-out school ever!). I have switched to flat shoes but that doesn't make much difference.
I eat at least one banana every day - I also read that sports drinks can help because they have the minerals etc in but I can't find any without sweeteners, which I always try to avoid. Any other tips that might help? I can't get to any yoga classes or anything like that due to them all being during work hours.