Check First 2 Cells Of The Last Row Is Null Or Not

In a column "V", when the user enter "Y", i need to copy the entire row to another sheet("Written-off"), its working fine.Sometimes the first 2 columns of that entire row where the user enter "Y" may be null, so using my code, copy first entire row where user put "Y" and paste to another sheet("Written-off"), then user also enter "Y" to wherever in "V" column, this time the entire row should overwrite the last row in the "Written-off" sheet.

I found the reason is first column of the last row was null, so when check the first cell, if it is empty then the next entire row should be copied that area.
Is there anyway to check first 2 cells of the last row in a sheet in null or not?

If Right(Left(ActiveCell.Address, 2), 1) = "V" Then
myColumn = "V"
If Intersect(Target, Columns(myColumn)) Is Nothing Then Exit Sub
On Error GoTo last
If UCase(Target.Value) = "Y" Then
Target.EntireRow.Copy Sheets("Written-Off").Range("A" & Rows.Count).End(xlUp)(2)
Application.CutCopyMode = False
Sheets(Sh.Name).Select
Else
Exit Sub
End If