Could I️ be pregnant?

So last Saturday on cycle day 14 (33% chance of pregnancy that day) my boyfriend and I️ started having sex without a condom but after a few minutes he put one on. We do this every time, we both prefer how it feels without a condom of course, but I️m not on the pill or anything anymore and I️m his first sexual partner. We’ve been dating for a little over a month now so he’s still learning everything. Anyway I️m a little concerned that I️ could be pregnant because of pre cum? Any advice?