I think I'm pregnant! Do you?

Hi, I'm Torie. Age 13.I lost my virginity on Friday the 13th. Today is the 31st. Today I started spotting. It got heavier after about 8 hours. Also, I used a trojan her pleasure. Do they have pinholes? It didn't break, but my period was delayed, and I read somewhere that when a girl is prego, she spots after 2 weeks. Help. Also how do i get a test?