Would I feel extremly i'll if I had leukemia? Do have health anxciety and google 2'much please help me

Look for symptoms. Acute leuekemias can have the same symptoms: bruising, bleeding, fatigue, bone pain (legs and back). Some leuekemias can have other symptoms as well. Certain leukemias have increased lymph node swellings. Other leukemias can have gum swelling. There are a lot of illnesses that can make you feel really bad. I doubt it'sleukemia that makes you feel bad, but if you have these symptoms: be seen.
Yes. And not a common diagnosis. Worry about something less serious.