The last day of my last period was February 3. I have since had unprotected sex at least twice, and for the past 6 days I have had a brown/sometimes light pink discharge. I did have slight cramping, and my breasts (around nipples) hurt so bad sometimes that it feels like they have been scraped with a cheese grater. I only feel nausea in the morning, and it usually goes away if I eat something. I have never been pregnant before, so I am not sure what signs would set pregnancy apart from my period. I took a HPT about 3 weeks ago, and it was negative. I also took another one about 2 weeks ago, which was also negative. Also, I have been extremely tired, and getting frequent headaches, along with backaches that are usually my lower back, sometimes upper. I have not noticed that my breasts are swollen, however, I have NEVER had sore breasts due to my time of the month. After urination, when I wipe, there is a brown discharge, which is sometimes light pink, but nothing in my underwear.
Can someone please tell me what the chances of me being pregnant are? I am very confused, and don't want to keep buying HPT's if it's not possible that I am pregnant. Thank you in advance!