well the basic check up. it can tell for example if you have anemia or an infection. there are many other tests, hormonal for example, heart tests, chest x-ray, neurological examination, but you should do complete blood count to start off with.
you should go to a Doctor, tell your parents that you want to be visited by a Doctor. there is no particular reason to believe that your problem is psychological.
tell your Doctor to have you do blood tests Hematology, Serology, liver function.
check the hemoglobin and white blood cells in particular.
it is likely that they'll diagnose you with some anxiety disorder. they would give you anxiety pills which do work on anxiety symptoms but are very dangerous and addictive in the long term.
If you had to go to a Doctor I suggest to you to see a Neurologist not just any doctor.
You definitely should see a doctor. It could be something like iron deficiency which is fairly common among women.
Its sounds like anxiety and you should visit a Doctor