Need Help: Check Sheet Name Exists Before Creating New W/ Same Name

[jmack81]

Hello - I've been searching for a while and found several things that may work but they all seem fairly bloated for my purposes. What I am creating is an attendance tracker for my employees. I have it creating a new sheet and populating the dates and other data when you click "start new month". Others use this as well. If one were to create a new sheet within the same month, there will be a run-time error due to the fact the sheet already exists.

I would like it to function as it does but in the event someone does want to create a new month(sheet) and that current months sheet exists already, I would like an input box so they can enter a name of their choosing.

Private Sub Cont_Click()
Nmth.Hide
Sheets("Empty").Copy Before:=Sheets(1)
ActiveSheet.Name = Format(Date, "MMMM-YY")
Cells(45, "A") = Format(Date, "MMMM")
Dim i As Integer
Dim counter As Integer
Dim days As Integer
days = Cells(44, "A")
counter = 0
i = 1
Cells(1, "D").Select
Do While counter < Cells(44, "A").Value
ActiveCell.Value = Cells(45, "A").Value & i
ActiveCell.Offset(0, 1).Select
counter = counter + 1
i = i + 1
Loop
End Sub

Thanks for any help. I'm out of practice!