Have sex 3 days after ovulation but he didn't have a ejaculation can I get pregnant still even though it 3 days after ovulation?

See answer. If semen enters the vagina, especially around your ovulation time, you are at risk of getting pregnant. Unless he had "pre-ejaculate" that may have sperm in it that entered your vagina (as you stated he did not ejaculate), than you should not get pregnant.
Yes. You do not need to have ejeculation to have sperm released in the vagina (although the majority of the sperm is released by ejeculation).