Is it normal if you just got your period and it is brown but the blood on the tampon is a blackish red?
Yes, this is normal. Dark blood is "dead blood" and red of course is fresh blood. When a woman is stressed out for any reason the muscles tighted and the lining that is coming out is brown (sometimes stringy) and the fresh blood is your normal period. Also starting birth control pills/patches can cause this. Nothing to worry about.