I started yasmin a month ago and have had without condoms.Could I be pregnant? Im on the second placebo?

Weve had quite a few times this month without condoms. He pulls out everytime just to be safe even though my pill package says its fine to not use backup the first day I took it because it was the first day of my cycle. I thought everything was fine but today is my second day of the placebo pills and no period. I know it can sometimes take a few days to start when on the pill but I'm just a little worried. Were not ready for a baby yet. Am I just paranoid?