Pregnancy? Or imagination?

Ive been getting pregnancy symptoms buts it's still 4 days till AF so took a test yesterday and was neg but I think I took it too soon! I had pink spotting for a day that then turned into brown then dark brown spotting! Had this a week ago? Could it be a IB? I then have been really gassy and starving hungry but feel sick when I go to eat? I am bloated and have little twinges of cramps at the sides of my pelvic area and my nipples are super duper sensitive and sore in my bra! What do you think? Me and my boyfriend have only been ttc for two months so I'm super excited! Am I just getting my hopes up or does it really sound like I might be pregnant?