7 weeks postpartum

Please don’t judge but I had my first baby 7 weeks ago and she is an absolute delight! But I also have in my head that I would two babies and very close in age. As in a year or less between them! To do this I would need to get pregnant now or very soon. I am nervous about this and myself and my partner briefly spoke about it but didn’t agree on anything. I did not go on a contraceptive and we had sex Tuesday night but he pulled out and came on me but then put it back in right after. What are the chances of me getting pregnant from that? I finished my first period after having baby on the Sunday.