Hello, ahmedemad, I am sure you are very concerned about this problem. At least I see that viral causes such as Hepatitia B & C have been ruled out. Your platelet count is not very low .This does not explain easy brusing or your rash, White cell count is low. Enlarged liver and spleen can be caused by a lot of conditions. These include, infections, parasitic infestations, cirrhosis of the liver related to heavy drinking, blood cancers such as Lymhoma , and also there are some metabolic disorders such as glycogen storage disease (This may be genetic), Amyloidosis or even Lupus . I know , I am giving you a lot to think about. You do need to see a blood specialist. A liver biopsy or if you have enlarged lymph glands in the neck or groin area, these could biopsied. Wish you the very best