Lost my virginity

So I’m kinda paranoid because I just lost my virginity to my boyfriend the other day and I just want an outside opinion. I’m on the pill and he used a condom, so I let him finish inside of me. But the thing that has me paranoid is that because I’m on the pill, my period has been late, even before I had sex. I know the chances of me getting pregnant is very slim, but do you think we should pull out until I get my period?