Of course there's a chance of pregnancy. You had unprotected sex, and he ejaculated 3-4 times during sex. He doesn't even have to enter your vagina for you get pregnant, all he has to do is ejaculate near your vagina and pregnancy is possible. But he didn't ejaculate near it, he ejaculated inside.
Any time you have sex, even with protection, pregnancy is possible. There are women on this site that used three different forms of birth control, all correctly, and still got pregnant. Some more than once. It happens all the time.
If you're not ready to be a mom, you're not ready for sex.
You obviously don't know enough about how pregnancy works to be playing these adult games.

