Hello. I am on lutera and just read that herbal supplements can affect the drug's effectiveness. I took garlic pills, cranberry pills, folic acid for the first time tonight in a home-remedy attempt to treat bacterial vaginosis. I also took milk thistle for the first time tonight. Just afterwards, I read that garlic and milk thistle can counteract birth control. I will not take these supplements again while on the pill, but am wondering if there is anything I can do now to prevent an unwanted pregnancy. Since I only took these supplements one time, is it likely it will interact with the lutera? Thanks!