See Top Reasons Your Tax Refund Could Be Delayed - TurboTax .
Yes, look at all the posts.
Sometimes it takes a little more time. Trying using the following link to track your refund.
IRS processing time and refund status
The online link is your best option to track your refund. I have attached a link with more answers from the IRS as to why your refund may be taking longer to process.
Federal refund questions