I?m concerned as to whether i?m pregnant or not, it would?ve been from on the 14th july, I started to feel a bit nauseous a week before my period was due and had a few cravings, i?m usually always right on the day or start spotting a couple of days before my period flow starts when it?s due to. When I did not start on time I started to panic and was so scared as I do not want children, then I started what I thought was my period 4 days late (i have been 1-2 days late before), it started off what I view as light-medium bleeding for me, amd lasted like that for 2-3 days which is normal for me then was light for another 2 days and just black/brown spotted a couple days after that to finish. I took a pregnancy test 2 days before I started bleeding and was negative, then another the day I started bleeding and was negative, then I went to the doctors 2 days ago and test was negative and negative for a uti, yet I still feel like i?m pregnant, yesterday and today I feel I noticed myself having the urge to pee more and I keep getting sharp twangs in my lower abdomen/uterus/sides of my pelvis. Also i?ve had a deep dull ache in my left kidney and side on and off over the past week too. I?m just so confused and scared I don?t know what to think.