Hope this is in the correct section, my apologise if it isn't.

I have this message running across the top of my store

Your database appears to need patching to a higher level. See Admin->Tools->Server Information to review patch levels.

I am also unable to login to the store via admin, I have disabled the shop as I am not sure what to do. Also I have not recently done any upgrades althought I need to. Shop has been working fine until now.

Any help would be greatly appreciated!