My hb count on 5 june was 6.8. Doctor checked my iron levels. The level was low so he gave me iron infusion. He also gave me iron and vitamin b12 tablets. I again checked hb count on 9 july. It is 12.4. Is it possible for in count to double in a month. I also had high bp in june. Doctor said it was because of less blood. Today also bp is on a bit higher side. I am confused is my problem bp or low hb count.