Sickle cell disease occurs from genetic changes that cause abnormalities in hemoglobin molecules: 1  Hemoglobin A (HbA) . 2  HbA is the hemoglobin molecule found in normal red blood cells during childhood and adulthood. 3  People who do not have sickle cell disease generally have this type of hemoglobin in their blood cells.ickle cell disease is an inherited blood disorder in which the body produces abnormally shaped red blood cells. In sickle cell disease, the hemoglobin in red blood cells clumps together. This causes red blood cells to become stiff and C-shaped.
A few new pregnancy symptoms will be noticed with the rise and fall of hormonal levels when you are 2 months pregnant. Your waistline is increasing even though you have not put on any significant weight. There is a change in the texture of the hair and skin during pregnancy.
There are 4 weeks and 2-3 days normally. 52 weeks in a year, not just 48. So if you are pregnant for the exact amount of time that you should be then you are pregnant for 9months and about a week. A majority of mommy's give birth a week before to a week after their due date which still ranges in the 9 month range. But we are not pregnant for 10 months. Your body stops receiving nutrients in the womb at 40 weeks which is why they will induce at 41 weeks of you haven't given birth yet.