Yeah, you've got reason to be concerned. First, that replacement card should have been in your hands by now. Second, if you should activate a replacement card before the charge gets made, it could well make your registration data invalid (as a security measure, a lot of banks will refuse charges submitted using old card data once the new card's been activated). And of course, there is the possibility that if you're awarded tickets, that may not happen until February 1st. The drawing will start sooner, but may possibly take until the 1st to complete.
Unfortunately, there's not a lot you can do about it at this point (next business/banking day is after registration closes). My advice would be to contact your bank to check on the status of that replacement card, and then once you have it DO NOT ACTIVATE IT until you've heard back about tickets. If you're awarded tickets the card will be charged immediately and you'll be free to activate a replacement card.