You take a goat's temp with a rectal thermometer. Go to the baby section at Walmart or your pharmacy, grocery store.... Try to get a quick response one that will take the temp within a minute - trust me, I was cheap the first time and didn't buy a fast one and that goat let me know what she thought about standing for 3 minutes with a stick in her bum! Get your hubby to hold her collar and talk to her or distract her with a little bit of food while you insert the thermometer, oh, and lubricate it with a little KY jelly or lube first, very helpful..... Hope it's nothing wrong with her - we got our first goats last Spring, it's amazing how much personality they have, huh?
The B-complex is a wonderful idea as well - always helps perk them up, you can find it at Tractor Supply or your feed store. It's given as a shot and doesn't seem to bother the goats much at all, don't worry!~ Don't forget to get the syringes and needles... I think most use 1/2"-3/4" and 20 gauge.
.... Oh, and a side note, as far as birth coming on, some goats have a little discharge a couple weeks to a couple days before birth, others have none.... my togg went within an hour of seeing just a little disharge!! Some good signs to watch for our the raised tailhead (fiasco farms has pics) seems to be a good sign and softening of the ligaments (
http://tyny.com/ligaments.html) good but are hard to find sometimes when you are new... look up fiasco farms :
http://www.fiascofarm.com/goats/bouncing.html
, theyhave a lot of good info there