BuddyPress.org

[Moved to another forum by OP request]

You can try this snippet which will add the link to main menu (aside About, Home etc):

function my_nav_menu_profile_link($menu) {      
        if (!is_user_logged_in())
                return $menu;
        else
                $profilelink = '<li><a href="' . bp_loggedin_user_domain( '/' ) . '">' . __('My Awesome Profile') . '</a></li>';
                $menu = $menu . $profilelink;
                return $menu;
}
add_filter( 'wp_nav_menu_items', 'my_nav_menu_profile_link' );

Another way to do this is explained in this topic.