I filled my taxes for last year and my refund still hasn’t came

It can take a few days for the funds to be released and posted by your bank to your account. However it appears it has been much longer. 

Please see this IRS FAQ under: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions

What is happening when Where’s My Refund? shows my refund’s status as approved?

We’ve approved your refund. We are preparing to send your refund to your bank or directly to you in the mail. This status will tell you when we will send the refund to your bank (if you selected the direct deposit option). Please wait 5 days after we’ve sent the refund to check with your bank about your refund, since banks vary in how and when they credit funds. 

Have you contacted your bank?

If your bank rejected the refund that notice will be updated on Where's My Refund and the IRS will mail you a paper check.

If you continue to not have progress with your refund and it goes over two weeks please see this information from the IRS as you may need to initiate a trace: https://www.irs.gov/faqs/irs-procedures/refund-inquiries/refund-inquiries-18. This will allow the IRS to contact your bank. 

To check on a state refund please visit your state Department of Revenue website for further instructions on refunds that have not been posted to your account.

I did file on the 1 of March. 

I got a text and email that I should get my state tax on the 21st of March. 

I'm concern if I'm going to get it soon.