Sex in bc w/ out condom?

So I have protected sex with my boyfriend and then the condom broke and I took the ec right away. Then about almost a week later I had a period for 3 days. we have sex with a Condom still, but sometimes we go without but he never comes in me and I finish him off with a blow job if we do that. My next period is in 10 days according to the calendar, but I’m worried I could be pregnant. I’m going on the pill soon but should I wait to take a test if my period doesn’t come? I’m worried about Precum I know the chances are slim but it is possible