Am only 7 wks with no 2, but already suffering from really twitchy legs at night. Driving me mad!!! Had them with DS, but only in 3rd trimester, but was a nightmare - used to have to get off the tube about 4 times on way home from work to walk up and down platform to make it stop enough to get back on train. Does anyone have any ideas about how to make it ease off a bit, or even why it happens in the first place?!