the possibility of falling pregnant by this?

[clearlysilly]

Partner pulls out, quickly wipes himself then goes straight back in...

Can c*m leak as he ejaculated moments before? Is it possible to fall pregnant?

Yes, and yes. Use a condom in future and hope you've been lucky this time - and/ or go get the morning after pill, depending on where you are in your cycle. (It's too late if you are ovulating.)

Yes yes and omg yes!

Yes. Get the morning after pill TODAY and never have sex without a condom ever again. And you might also need to get an STI check.

Don't have sex unless you know how it all works

I'm sorry to sound harsh, but how can you not know this?

Of course it’s possible to get pregnant that way. Less likely but still possible.

I have never come across anyone doing that before.
Was it his own idea and did he discuss it with you firstly? 🤔