I ready your post in Do I have ALS? A twitching calf isn't a sign that should make you worry about ALS, but there are people who deal with twitches like yours. They hang out:
http://www.chatzy.com/Twitches-R-Us
The moderator there is very helpful, and I think you'll find a lot of support.
http://www.chatzy.com/Twitches-R-Us
The moderator there is very helpful, and I think you'll find a lot of support.