General Feeling Of Unwellness

[ShineStar]

Just wondering if anyone out there could maybe help me figure out why i feel so generally unwell, as i have been to about 10 different doctors and have never had even one useful diagnosis or helpful information given to me from one of them.
I am 21 years of age and have been suffering debilitating headaches/migraines for about 4 years now( on average about 5 days out of 7 i have a headache ). I also experience the occasional nose bleed( maybe once every couple of months ).
In the past few months, i have been experiencing light-headedness, nausea, loss of appetite and a little bit of shakiness( in my hands ).The loss of appetite is what really bothers me because up until these few months ago, i was always such a hungry person, even when i got sick with the flu or a cold, i never lost my appetite. Now, even if you put my favourite food in front of me, i start to feel full and sick after just a few bites. Today as i am writing this, i am on my day off from work and need to do a few things around the house but when i get up and start moving around i feel so sick and light-headed.
As i said, I have seen about 10 different doctors and have also had a CT scan, to test for a brain tumour, but all was clear.
I forgot to mention to that in the past week i have lost 2 kilos.
If anyone can help, i would really appreciate it. Thanks......

[ShineStar]

Thanks for the reply. I am feeling very light headed at the moment and have had a very bad headache all day that i just cant get rid of, even after 6 painkillers today.I dont suffer fever in the evenings but have had an annoying cough that just wont subcide, for about a week now, to the point that i have hurt my stomach muscles from coughing.
I live in Australia.

[JainMD]

Hi Shinestar,
How are you feeling? Which part of the world do you belong to?
Do you mild fever in evenings? Have you got cough or any other associated symptoms like hemoptysis?
I think it might be Tuberculosis. You should be checking out for this. You can get a Tuberculin test done and chest X-ray.
Complete blood count and ESR study could be done. Mantoux test is the one which will help us in diagnosis.
I am mentioning that this could be a possibility, not that it is the diagnosis.
Keep me informed I would be interested to know further development of disease pathology.
Bye.