I need help/advice please!!

I have sex with my boyfriend regularly and I'm not on birth control but he used a condom. I'm scared maybe it broke or a got cum inside me afterwards. My period is late and I'm showing signs- metallic taste in mouth, swollen breast,and a weird bump at the bottom of my stomach( but you don't have a bump at a month pregnant right?) i dontknow if I'm freakingnout over nothing or I am pregnant. I can't buy a test. Also it would be hard for me to get a aborition pill. IM ONLY 16. I'm not fit to be a parent. I smoke and drink regularly and have been this last month