Blood pressure rises after giving blood , what to do now ? I donated blood yesterday , I donate blood regularly for four months in a row, since the blood donation this time my head is spinning , my body is shaking , this has never happened before , so I measured the pressure 126/6 which is normally 120/60 , now my head is spinning and my body is shaking , Tomorrow , I have an exam on the 7th, I can't read , what should I do at this moment ?