Pregnant or not???

Karla
So my Period was due 03/14/15...i started to bleed on 03/16/15 it was bright red then when i woke up the next morning it was all brown then the next day there was nothing on my pad so i put a liner on and got like a inch of the brown blood on it allday then it was gone 03/18/15 i was having cramps but they werent like period cramps my boobs were hurting but not anymore...no symptoms...just excessively tired and frequent urination but that could mean anything some one help should i test or dont even waste my time?