It's an occupational hazzard!! They will toughen up over time and soon you will be able to push a pin through the top if your finger and you won't be able to feel it!
Surgical spirit is a quick help to toughen up the skin. Many string players including myself (double Bass) use it to speed up the hardening process after a holiday or so. Dab some on your fingetips once a day, but only while the skin is soft. If you continue to use it, your skin will will begin to crack...but only after a few weeks of constant application. Other than that as said above, practice, more and more. It'll pass quicker than you can imagine.
Or you could get a lighter gauge of string - it wouldn't get rid of the problem and the sound won't be as good, but it could ease it a bit. Oh and one final thought as this often is something people don't think of. Only press as hard as you need to get the sound out. Some pupils of mine were gripping really tightly and overworking their fingers and hands.
Sometimes you just have to face it head on and play through the pain. I've been playing over 25 years, but I remember vividly building calouses. To get them toughend up quick do some chromatic excercises or run through scales. It's rough, but the sooner you get you calouses built the better. Then you can realy get serious about it.