Large Anxieties

Hello! I was just looking for a little peace of mind... I lost my virginity the other week (before the 4th) and it was after a week of being on the pill (apri pill with desogestrel and ethinyl estradiol) and we also used a condom. The condom started to slip during, so he pulled out before it could slip off and we switched to other activities to be safe, and he finished during those activities so he didn't finish inside me. I know I'm just being anxious but I'll be even more anxious if I don't get my period this coming week since it's my first month of the pill. I was just looking for some words of wisdom/assurance from fellow women to calm my anxieties a little. Thank you!