scared and worried please help?

I haven't had my period I was supposed to get on on the 10 never did. Today around 4 I went into the bathroom and was bleeding I said ok I must be on better late then never. Around 730 I went again no blood I said ok weird but I kept the pad on. Now around 10 I went and whipped a lot of Brown was on the tissue jus a Lil bit of blood in the pad like two drops asked my friends ssome said pregnancy some said period slowing down but they were mixed and I just went and there is still a Lil Brown when I whip what's going on please help