google ignors my robots.txt instruction

hi all,

google is indexing the same post 3 times,

1-the post itself; for example: https://www.recipetrezor.com/oregano-marinade-recipe/
2-then (register) https://www.recipetrezor.com/oregano-marinade-recipe/?action=register
3-and (lostpassword) https://www.recipetrezor.com/oregano-marinade-recipe/?action=lostpassword

I have the following in my robots.txt file

User-agent: *
Disallow: /?*
Disallow: /wp-includes/
Disallow: /wp-content/plugins/
Disallow: /wp-login/
Disallow: /wp-content/themes/
Disallow: /wp-content/cache/
Disallow: /trackback/
Disallow: /wp-admin/
Disallow: /comments/

could someone shed some light on this, or is it anything I sould worry about at all?

thank you,