I have used two different b/c throughout my life, depo(didntlike)and iud(lovedit)...now after my fourth I am trying Yaz. Insurance doesnt cover iud and hubby didn't like it

. Anyways I am still on my first pack of pills and just wondering about a couple of things. Do you really have to take it at the exact same time everyday? How long till I can have sex without worrying about getting pregnant. We have four kids all planned and loved but we think we are definately done now. :) Thanks for your answers!
Misty