You may need a transfusion of red blood cells if you have lost a lot of blood or your red blood cell count is low (anemia). You may need a platelet transfusion if your platelet count is low (thrombocytopenia). White blood cell transfusions are rare and are only done in very specific situations.
1 So, the earlier after a missed period you take a HPT, the harder it is to spot the hCG. 2  If you wait one week after a missed period to test, you are more apt to have an accurate result. 3  Also, testing your urine first thing in the morning may boost the accuracy. When you use them â The amount of hCG in a pregnant womanâs urine increases with time. 2  So, the earlier after a missed period you take a HPT, the harder it is to spot the hCG. 3  If you wait one week after a missed period to test, you are more apt to have an accurate result.
Once you have noticed that you have missed a menstruation cycle you should take a pregnancy test, or 2-3 weeks after intercourse. The best method for knowing if you are pregnant is to see your doctor.