If you were having a relationship with a married man and fell pregnant, would you keep the child if he didn’t tell you until 13 weeks pregnant that he didn’t want to be part of the child’s life?

I think it's impossible for anyone to accurately say unless they are in that exact scenario. There's no right or wrong answer.

Why’s it matter if he wants to be apart of the child’s life or not? Surely it’s up to you if you want to keep the child

I’m guessing he doesn’t want to be a part of the child’s life because he doesn’t want his wife to know that a) he’s been cheating on her and b) he got his mistress pregnant?

Did you know he was married,if you did and still wanted the baby,have it,it’s gonna be hard yes,buh just focus on yourself and your baby,he’s a grown man,he can choose to later see the baby ,buh actively be in the child’s life,his wife would have to be aware