Could i be pregnant?

I'm 17 and had unprotected sex with my boyfriend about 1-2 weeks ago for the first time, since then we have twice more unprotected but he pulls out. I've been experiencing more acne than usual, tiredness, light spotting, urinating a lot more, and i usually poop once a day sometimes every other day but recently have been about 3-4 times a day which is unusual for me.
I haven't taken a test yet because i don't drive and cannot ask my parents, and my boyfriend lives too far away. I'm just wondering if anyone who's been pregnant before has experienced this?