Thanks to the tips here I am able to redirect my WP feed to wordpress, but it is now acting strange.

The only time the redirection will not work is when
someone types in the exact following url

w w w . myBlogSite.com/feed/

but all the following seem to be working

w w w . myBlogSite.com/feed
http: //myBlogSite.com/feed
http: //myBlogSite.com/feed/

Here is the exact code of my .htaccess file. Any suggestions?

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php
RewriteRule ^post/([0-9]+)?/?([0-9]+)?/?$ /index.php?p=$1&page=$2 [QSA]

RewriteCond %{HTTP_USER_AGENT} FeedBurner
RewriteRule ^feed/?([_0-9a-z-]+)?/?$ /blog/wp-feed.php?feed=$1 [QSA]

RewriteCond %{HTTP_USER_AGENT} !FeedBurner
RewriteRule ^feed/?([_0-9a-z-]+)?/?$ http: //feeds.feedburner.com/myFeedBurnerName [R,L]
</IfModule>