Not sure Jackie...has it just uprooted or the stem bent over. If it's the stem, it sounds like its dead from where the bend is. In Spring prune it back and you may see it shoot again.

thanks for reply! its the stem, should I prune it to where the bend is?

I would prune just below the bend, and wrap the remainder in fleece so it doesn't get any more frost damage.

thanks! when you say fleece do you mean wool?

No horticultural fleece which you get from a garden centre.

thanks!