OK so I have been having brown discharge. I am not supposed to start my period for 14 days but two days ago I woke up and had light brown discharge. I had so much I had to use a tampon but it was thick in fact it was very thin and runny (gross I know). The next day it went away and I didn't have any at all but I did have tiny cramps (which is weird for me because usually cramps send me to the hospital I get them so bad) But sure enough today when I woke up it was back and I haven't had cramps but I feel like I have a lot of pressure inside of my uterus. I am almost 18 and on the pill. I know that a lot of girls have it when they are young but I have been having my period for 7 years and I have been on the pill for just over a year and a half and I have never had this happen before. I am currently sexually active with my fiancé. I was wondering if anyone has any info of why this is happening? I know I don't have an STD so you can rule that one out. Please help me!! I'm really scared!