Pill cumming?

Oanh • Hello! My name is Oanh and I'm into cars so incase you have problems with that I'll love to give a helping hand :)
I'm curious. 
If I just started the pill I understand that for at least 7days I shouldn't have sex without protection but when is it safe to have sex without protection and the pill will be able to help out with me not being pregnant?!?
I hope you guy can understand that question.