Yep, I've had that happen.. take some time off... it will probably just clear up on its own. Sometimes you need to give your fingers a break and give your pads time to thicken up. Also, if you're not doing so already, try to space out your practice time a bit more... four times @15min should work well. Third finger is often a common culprit as it just seems to do more work than the others. Just give it a break and you'll likely be fine.