Effectively you are lost; not because you lost track of where you are, but because where you are has changed so much that familiar orientation is gone. So consider the mnemonic for what to do when you realize you are lost:

STOP: Stay Calm, Think, Observe, and Plan.

The classic big first decision when lost is whether to stay where you are / bug-in because you judge help will come, or whether to try self-rescue / bug-out because you judge help will not come soon enough.

Many have found that sitting and drinking a "cuppa" whatever your favorite non-alcoholic hot beverage supports the various portions of the STOP program.