How often can i take plan b? i already took two pills about a week in between each. had an accident today (a week after) should i take another plan b?

Here's the real deal: I don't believe that taking another Plan B is likely to harm you (but you never say never in medicine). The real issue is that you need to get on some birth control that you trust. This worry isn't good for anybody. Make an appt with your doctor or with your local planned parenthood and explore your options for a birth control method you can trust. Btw, keep using condoms for infection protection.