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.
12 Weeks Pregnant: The 12th Week Of Pregnancy. Relax! Most women will be experiencing a decrease in morning sickness this week. Here is what else you can expect.our baby may have developed more complicated reflexes such as sucking. Your baby is 3.15 inches (8 centimeters) long and weighs 1 ounce (about 28 grams) by the end of this week. Now is a great time to look at your diet and make sure both you and your baby are receiving all of the nutrients you need.