Help. I'm not showing any symptoms of pregnancy, but not getting any period symptoms either...

Help. I don't wanna test yet, but I'm 3 days away from my period and usually I get cramps, my vagina is aching so bad I have to soak in the tub , my boobs aren't sore, I'm still the same weight, but it's been 3 weeks so.. I was late for my last period too I'm not sure if I should wait till I should be 6 weeks or test Friday when I turn 4 weeks if I am pregnant. I don't care if I am pregnant or not, if I'm not I just still do me , but if I am it's time to buckle down and be the best mommy possible to my LO. Any advice? He said he doesn't want a baby right now, but what 18 year old does? We have been careless in sex, my bc fell out and I told him that. I'm putting one back in tonight, just not sure what to do