It seems that you have anemia.

Anemia is the decreased concentration of hemoglobin. It presents and is diagnosed by pale finger nails with stripes. The pale finger nails with the bottom part of the nail being paler are typical of anemia. Anemia is a very common problem in girls in adolescence because of loss of blood in menstruation coupled with increased need for hemoglobin to supply oxygen for the growth spurt. The oxygen is needed for nutrition of the cells and in anemia there is decreased nutrition to the extremities and hence the extremities feel cold and weak.

I would recommend the following-

1)Consult your physician and get a hemoglobin concentration tested. Also get a complete blood count to check for other causes of anemia.

2)Take ferrous sulphate tablets 150 mf to increase the iron content in the blood and aid in increase in the concentration of hemoglobin. Iron sulphate tablets are known to cause black stools and constipation hence it’s advisable to use a laxative.

3)Eat a good balanced diet with good portion of proteins carbohydrates and vitamins. Consume diet rich in green leafy vegetables and milk. A diet rich in iron can improve anemia.

Thank you.