Code issue with a flashing light(simple question)

I want a led to gradually have shorter light flashes towards the end. All in all it should take 21 minutes. Pushing the switch once should lead to pause. Pushing it again should continue.
Starting the code from the get-go without pushing any button, the led flashes once, only. Do you know why?

Code:

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pos = 1
counter = 1260
while pos < counter
        pos = pos + 1
        LED = 1
        time = ((-851 * pos)/counter)+1003
        Pause time
        LED = 0
        Pause 1000-time
        if switch = pushed then
                Pause 100
                WHILE switch = unpushed
                WEND
                Pause 100
        endIF
Wend

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Quote:

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WHILE switch = unpushed
WEND

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This to me sounds like it is staying inside that loop until the switch is pressed

EDIT: nevermind I missed the IF Then Statement.

Yes, you can leave that out.