Problems with mod_rewrite, help!

Question

I have the php mail function on a page but every time I load that page, I wil get 8-12 mails instead of 1 mail. The problem is the htaccess I suppose.

My .htaccess:

Options +FollowSymLinks
Options -MultiViews

RewriteEngine On

RewriteCond %{ENV:REDIRECT_STATUS} ^$  
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule ^(.*)$ /index.php?q=$1 [QSA,L]

Please help me, I can't find this problem on Google and I'm search for almost 2 days.