A few tips when tracking your refund on the "Where's My Refund?" tool:
1) Try clearing the cache and cookies of your browser first (here's how: How to clear your cache?)
2) Make sure you're only entering in the amount you're expecting to get back from federal.
If it has been more than 21 days and you're still unable to track your refund, you can reach out to the IRS for more assistance. Here's how: What if my IRS refund is taking longer than 21 days?