Google Translate text only if it is not english - excel

Question

I am importing google alerts into my excel worksheet , what I am trying to do is only use the google translate code I have if the text is not in English. As the code is very slow. And I import upto 1000 rows of text. The majority of those are already in English. But at present my code translates every row.
Public Sub Translate()
Const MAX_WAIT_SEC As Long = 5
Dim IE As New InternetExplorer
Dim t As Date
Dim ws As Worksheet
Dim ftext As String
Dim x
Dim y As Long
Dim translation As Object
Dim translationText As String
y = Sheet1.Cells(Rows.Count, 1).End(xlUp).Row
Set ws = ThisWorkbook.Worksheets("Google_Notifications")
For x = 1 To y
With IE
.Visible = False
.Navigate "https://translate.google.com/#view=home&op=translate&sl=auto&tl=en"
While .Busy Or .ReadyState < 4: DoEvents: Wend
ftext = Sheet1.Range("C" & x).Value
.Document.querySelector("#source").Value = ftext
While .Busy Or .ReadyState < 4: DoEvents: Wend
t = Timer
Do
On Error Resume Next
Set translation = .Document.querySelector(".tlid-translation.translation")
translationText = translation.textContent
On Error GoTo 0
If Timer - t > MAX_WAIT_SEC Then Exit Do
Loop While translationText = vbNullString
Sheet1.Range("C" & x).Value = translationText
Sheet1.Range("E" & x).Value = "Translated"
.Quit
Set IE = Nothing
Set translation = Nothing
translationText = ""
End With
Next x
End Sub