Just got on BC. I am okay?

So I just started the lo loestrin fe a week and like 3 days. We had unprotected sex yesterday but he pulled out the first , second 5imes he peed between and 5hird time he didn't pee but we didn't finished. People are saying it 5akes a month for BC to work . But when I read the directions and remember what my doc told me if I start the pill the first day of my cycle (which I did) I'm covered and or after the first seven days( im on like day 9) I just finished my period 2 to 3 days ago. Its a combo pill so that's what I read. Wasn't sure why everyone thought its a month. Maybe some pills are idk. I was just wondering cause after reading some post I got paranoid cause I forgot to buy a sponge as a back up buy we thought since it said seven days we will be okay and no cum just precum.