Can you get pregnant from pre-cum?

Hi I'm new to this but I have a huge question and you can already tell.

Can you or can you not?

My bf and I were together and after I gave him a blowjob he asked if he can put his d*** in me. And I let him. We did not have a condom so we were trying to be really careful. As soon as I check my log in I was at my ovolation thing and had 31.4 % (high) chance of getting pregnant. Can some one tell me please that I won't get pregnant.

I'm too young to be a mom and already having so much going on.

I know I made a huge mistake and everyone here can judge me.

But plz, I'm crying now and I have been praying to God that I won't get pregnant.

Can someone please tell me!!