Since you can’t be too safe these days seeing as how the HeartBleed bug is one of the most widespread and publicised vulnerabilities in recent years. The list of websites that are affected by it is pretty long so figuring out if you need to change your password is a little on the troublesome side.
In the meantime, hit up Chromebleed, an extension for Google Chrome that tells you if the site you are on was affected by the bug and is still vulnerable.
From The Plugin’s Description:
Many HTTPS-secured sites on the internet use OpenSSL. Unfortunately, a major vulnerability in OpenSSL was disclosed – known as the Heartbleed bug – yesterday that put hundreds of thousands of servers at risk of compromise.
Whilst some servers have been patched already, many remain that have not been patched. Chromebleed uses a web service developed by Filippo Valsorda and checks the URL of the page you have just loaded. If it is affected by Heartbleed, then a Chrome notification will be displayed. It’s as simple as that!