Hi i am 18 years old. I am now 6 days late on my period. On the day of my suppossed period I got some brown discharge with some blood, I thought i had started my period but through out the day it started getting lighter and lighter so i didnt need a tampon or a pad, just a liner. This lasted 3 days. I got a pregnancy blood test yesterday and it came out negative. I dont have cramps or sore boobs, thats how usually i know im about to start my cycle. I do get a little nauseous in the mornings and lower back pains but it''s not too bad.
Could i be getting my period or could i still be pregnant ?