Hi Shell,

Try tonic water.
It has quinine in it which is suppose to help with cramps. Although the amount of quinine in tonic water is only small I have found it to work really well.
Through my second pregnancy I just put up with the cramps (mainly in my calf muscles), this time round I have been drinking 2 glasses at night, one with dinner and one just after and since drinking it I have had no cramps. Last night I did not drink any as I did not get home till late and sure enough I was up in the wee hours jumping around with a leg cramp.

I have also heard that vitamin B may also help but have not tried that.

Rach