achy calves

[bakedpotato]

i'm 28 wks. so far had escaped the dreaded night leg cramps but i think this awful ache i've had all day is a sign they're on its way. what can i do to make the ache go away/head off the cramp? is it related to a dietary deficiency (please don't tell me to eat bananas)?

legs still achy, but not tender or red or anything scary.

i'd sort of forgotten about the leg stretches. i rememver they helped last time. extend affected leg behind you, knuckles on wall, push heel towards floor, right?