No it won't. You need to get the morning after pill or emergency contraception. The pill takes 7 days to prevent pregnancy when started or it is effective the first day if you start on your period. I highly recommend you get the morning after pill. If you don't want to take your birth control pills, then you need to find another form of birth control.
You're welcome. They should, but it all really depends on the clinic. I know planned parenthood has them. A smart choice might be to get your phonebook and look for women's health clinics, then call and ask if they off the morning after pill. It's a shame to run around looking for one! haha! May I also suggest you trying the pill again? or maybe the nuvaring or the patch?
The Planned Parenthood Clinics will get you an emergency appointment and give you the pill.
It's not a good idea to mess around with the pill, like go on and off randomly. You should definitely go to a doctor and figure out what kind of birth control you want to use and stay on.