Help me

I am asking for your opinion in this matter bueno cause i find myself a bit lost, me and my so had un protected sex and he did the pull out method but i have a feeling some of his stuff went inside due to the fact that i went to the restroom and looked like it, tjeproblem is i am fertile since yesterday to to the pain a expiernece each month i can know. But we have the oportunity to take the morning after pill but we talked and he said not worry and didnt want me to take it. Im not sure what to do i have a kid already two years old to be exact and the fatherbwas never around so its pretty hard what do you guys think i should do? Help me could i be pregnant. I am 22 and my so is 23 years old.