That was supposed to be s little over a year...I'm sorry.
You should always use two forms of birth control for best results. For the pill to be effective it has to be taken perfectly (once a day, same time everyday) and many women don't do this. If you're not ready yet for more children it's better to not chance it.
The doctors suggest 3 months. Birth control is honestly only 93% effective so I would suggest using condoms as part of the birth control method too if you do not honestly want a baby. Taking certain medicines like antibiotics will reduce the effextiveness of the pill. Better be safe than sorry!