New to this whole thing

Okay so my period is supposed to start today. I took a pregnancy test yesterday and got a negative. Then last night I started spotting brown blood, which is strange to me because I never spot before a period. Well now I'm still spotting brown blood today and my basal body temp is still at 98.2. I'd if I should take another test or expect at flow to rear her ugly head today. I'm really anxious and nervous.