Never EVER click on a link in an email from Paypal. EVER.
Always go to your own bookmarked link and log in. If it was a real email, more than likely you will see it when you log in.
Just one more time. NEVER click on any links in an email from Paypal. It's too dangerous if you don't know what to look for. If you know how to look at the headers of an email to see where it is truly from, then do it!