I said that I already have a doctor and we did blood tests and he said I'm fine and not to worry but what if he's lying just so that I stay like this until it gets bad then I'll need him forever and he'll get paid from me needing him all the time.
I don't have anorexia or bulimia I don't have any delusions about my body size nor do I ever throw up my food or feel bad about eating.
Delusions about body size, throwing up or feeling bad about eating are not required for a diagnosis of anorexia nervosa man.
However, it is required that you fear/strongly do not wish to put on weight - alternatively you may be very worried about becoming fat even though you are underweight.
If you do have an aversion to putting on more weight or fear of becoming fat as above, then your BMI and the other criteria would qualify you for an Anorexia Nervosa diagnosis (Restrictive Type, Severity: Mild - as determined by your BMI of 17).
If you do not, you still have medical problems if the title of the thread is accurate. NOBODY should be taking in on average a total of 625 calories per day for any extended period. Nobody is best off maintaining a BMI of 17. If you only consume 250 calories in a day like you mention in the OP with any regularity, you should expect that you are going to have health problems as a result eventually, if you do not already.
How long has it been since you have only been eating so little on average? Is this a long term thing?
If you have done blood tests and not found any problems, then maybe you are not actually getting as low of an intake of food/nutrients overall as you thought?
At any rate, if something concerning about your health emerged in those tests and the doctor said it was fine (I cannot imagine why they would do this, see below), you could surely take the results and get a second opinion from another doctor (even if there are no other doctors locally, could you not just e-mail/call another doctor elsewhere and ask if anything in the results was concerning?)?! I have never known doctors to deliberately lie about test results!!! They know very well that the results can be scrutinized by other doctors and qualified technicians etc! You could even look up what normal ranges are for these various test results and check for yourself if anything is concerning!
What makes you suspicious that the doctor would lie and tell you that there is nothing to worry about if there actually is a problem?
You do realize that many of the potential diagnoses that can account for extreme caloric restriction are chronic illnesses? This means that if there was a problem and the doctor diagnosed it, this would be likely to greatly INCREASE the number of visits you make to him and other doctors,
which would translate to more $$$ for them than if they diagnose nothing!
Are you actually experiencing symptoms of malnutrition, or anything that suggests something is wrong with your health other than your reported food intake?
If not, then by telling you that nothing is wrong, the doctor should expect to see you less often, not more!
This would mean less $$$ for him, not more.