The IRS issues a lot of refunds within 21 days, but it could take longer. 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
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"