no peter a month is NOT long enough. ob/gyn's say at least 2- 6 months for b/c to take effect.
yes. b/c is NOT 100% effective. my brothers ex gf had his baby today...she was on b/c.
Hi, :)
When it comes to me, I never allow my bf to do anything unprotected but in Your case, I think if you're already on a birth control, then the probability of getting pregnant exists but not high. :)
However, if you're not sure, you can go the gynecologist, and get a recipe for Escapelle. You have 72 hours to take this, in order to get away from pregnancy for 100%. :)
Good Luck.! ^^