Need Wordpress help.

I just got my site up and running and then BAMMM I was hit with this error.


Warning: Cannot modify header information - headers already sent by (output started at /home/tiffanyg/public_html/straightforwardlifecoach.com/index.php(1) : eval()'d code:37) in /home/tiffanyg/public_html/straightforwardlifecoach.com/wp-includes/pluggable.php on line 896

I have searched for days about this. Most claim its blank lines in the coding which I downloaded many files checked them they are all fine. Now what the coding is on that exact line is this.
header("Location: $location", true, $status);

And now here is the coding around it.

function wp_redirect($location, $status = 302) {
global $is_IIS;

$location = apply_filters('wp_redirect', $location, $status);
$status = apply_filters('wp_redirect_status', $status, $location);

if ( !$location ) // allows the wp_redirect filter to cancel a redirect
return false;

$location = wp_sanitize_redirect($location);

if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' )
status_header($status); // This causes problems on IIS and some FastCGI setups
header("Location: $location", true, $status);
}
endif;

if ( !function_exists('wp_sanitize_redirect') ) :

Some claim I got hacked other says its a redirect problem. I am going nuts. I am not a coder or programmer, I have no idea what I need to do.

I guess I could wipe it clean but then again I don't have a fresh copy of the template I paid a good amount of money for (stupid me). He just uploaded it to my wordpress since I didn't know how to do it myself.

Since then I have learned how to do a lot of stuff and could with a lot of time, figure out how to re-install wordpress, the theme, all my pluggins, etc...

Is this what I really need to do? It seems like their could be a much simpler fix to this.

I am extremely frustrated and rather stupid.