You need to make sure you have the following in your htaccess:
Code:
# Always use https for secure connections
# Replace 'www.yourdomain.com' with your domain name
# (as it appears on your SSL certificate)
#RewriteEngine On
#RewriteCond %{SERVER_PORT} 80
#RewriteRule ^(.*)$ https://www.yourdomain.com/$1 [R=301,L]
If you don't have that in your htaccess file you will have to change all http instances to https manually.