Okay, first I am not sure if I am pregnant, I have cramping for about two weeks and bad lower back pain,maybe this is my period but not sure. The cramping is also different then with my period. I took one pregnancy test before I was due for my period it was negative then I took one today it was negative I am also late for my period about 3 days today. But the thing is that when I wiped myself both times today one was brown and one was yellow discharge with red spots in it both time I never had this with my period? Is this normal for when a person gets their period? Because I never had it before.I do not know what it could be?

I would definitely get to the doctors if I were you. There's so many things that can cause backpain, some are nothing to worry about and other causes can be pretty bad. And the discharge concerns me. Play it safe and see your dr.