After you file

My federal return was accepted on February 15th, and still nothing. When I go to irs.gov, it says my federal return hasn't been processed and I'm passed the due date, and even when I go to their "Where's my Refund?" tool, it can't find anything.

I'm assuming that Covid is the culprit for all the insane delays, but any time the IRS tells me I'm late, I get nervous....