I'm just not sure if I am pregnant or not, I was suppose to get my period last week and it was two days late but then I had spotting for two days it was pinkish red, then the next day when I whipped I had a lot of brown discharge. I had a miscarriage a few months ago and I feel like I did before I miscarried. I am nautious, extremely tired have a lot of lower back aches, and frequent head aches, I tested yesterday and got a negative pregnancy test, do I have to wait a few days after implantation bleeding to get a positive result? I have weird sensation in my stomach and my sides feel funny.. what is wrong with me.. was that light spotting my period, in the past my period is always on time and always very heavy, and usually lasts 3 to 4 days. what do you think?