amateur at life and all things to do with Birth Control

Eve
My Boyfriend wants me to go on the Pill and everyone is recommending it but how does one 'get the pill'? I come from a Christian upbringing and my parents wouldn't be happy with this but it's seriously what I need to do. We've been having unprotected sex and just pulling out for months now, it's only been recently that he almost came in me the other day that reality has hit. 
Do I go see a doctor and talk about getting on the pill or do I go to a chemist? Idk, I just feel really alone in all of this. Can anyone help a sister out??