Yesterday I was with my boyfriend, we didn’t have any condoms

We really wanted each other, so he put it inside me, but just for 3 or 4 pushes... I am 8 days after my menstruation, can I be pregnant because of this? I don’t want a baby. Would you recommend a morning after pill? If yes, do I need a consent from my parents or anything like that at the age of 15?

Yes, you may be pregnant. Given that average bleeding lasts 4-5 days, you must be on day 12-14 of your cycle 8 days after menstruation. That is exactly when ovulation occurs. I recommend the prescription of morning after pills and contraceptive pills. You do not need a consent from parents, but a laboratory test is needed to check whether you have a predisposition to thrombosis.