I had sex on the 1st of Oct, condom and he pulled out before he came. The chances of pregnancy is very unlikely right?

It was also my first time if that helps

The brownish is when I went to wipe again to see if there was any more blood. I’ve been having cramping for the past few days and sore breasts, and my period is late however it’s been late in the past (attached photos of past cycles)

Thank you!!