Should i be concerned that it has been over a month and haven't received my federal return?

[DanaB27]

Some return may take longer. Please see What if my IRS refund is taking longer than 21 days? for information what to do and why it might take longer.

Also, you can track your refund at the IRS Where's My Refund? site. 

[pulisic]

Most people posting here have the same issue. That tells me that your case is not out of the ordinary. I'm also waiting on my federal return, and it has been over a month since the IRS accepted my return.

[Katina S]

Since your tax refund is taking longer than the typical 21 days to receive, see this FAQ regarding  What to do if it's been over 21 days.