Chance of pregnancy and other factor?

My last period began Dec 24 and lasted about 5 days. I had "pull out" on Jan 3 and Jan 11. Now, don't judge. I just want an objective, hate-free answer. On Jan 15-21 I had unprotected each day. What are my chances of being pregnant from the on Jan 15-21? That was with my fiance but the on jan 3 and 11 was with a different guy who I definitely do not want to be the father of my potential child...what are my chances of being pregnant from the "pull out" ? Again, I realize the error of my judgment here and I just want a straightforward answer from a purely medical perspective. Thanks for your time.