Yes, this has happens to me during praise and worship on Sunday mornings especially when I lead the congregation into praise. It is an early service and my voice hasn't opened up yet. I also have to keep clearing my throat . I like the suggestion someone made of turning on the radio in the mornings while getting ready for Sunday service and singing along to kind of get the vocals opened up.
It also happens in rehersal when I am teaching choir parts. They usually have bottled water on the organ for me but now they know to only bring room temperature water.