this week I had terrible,terrible cramps in my stomach, falling to the floor in my bedroom before I could get to the toilet, I was dizzy, cramping with pain in my stomach and very clammy, I finally after that got to the toilet and had diahrea badly and to may dismay found when I wiped my bottom there was quite a bit of dark red blood on the toilet paper the colour a kidney colour I then went straight to bed as I still felt very unwell and still had pains in my stomach, I have had conctipation for months now but now every time I use my bowels this dark red blood is there, should I be concerned and maybe see a doctor?