I am glad that you wrote and I would implore you to keep trying. Unfortunately, you are experiencing what many people report about the public mental health system. It can be very good but it also has its drawbacks, one of which is limited staff and resources. I would encourage you to attend your next appointment even if it takes months to be seen. I would also suggest calling other local mental health centers to see if they can evaluate you sooner. Some have found it helpful to call their local health department to inquire about other low-cost or free mental health services. Another idea is to search the local newspaper for universities conducting studies of Asperger’s syndrome, autism or schizophrenia. In recent years, there has been an increase in the number of scientific studies investigating these disorders, particularly Asperger’s syndrome and autism. By participating in research you may receive a diagnostic evaluation that can help to determine if you meet the criteria for either one of these disorders. You will also have the opportunity to work with scientific minds that have access to cutting edge interventions and resources. ClinicalTrials.gov is a good place to search for research trials which are recruiting participants. Another good resource that may help you to locate research studies, is the National Institute of Health website.
Some of your symptoms are not necessarily consistent with an autism spectrum disorder (ASD). Those include your sex addiction, your ability to keep a job for longer periods (three years) and suicidal ideation. Individuals with ASD traditionally have poor employment outcomes but keeping a job for three years would be considered a significant period of time. With regard to suicidal thoughts, individuals with ASD are no more likely to be suicidal than the general population. You did not mention this but other signs of ASD include difficulty interacting with others, social anxiety, and an inability to recognize social cues. Keep in mind that it may be difficult to determine a definitive diagnosis. Sometimes individuals meet some of the criteria for a disorder but not all of those necessary to receive the diagnosis. An individual can struggle with many psychiatric issues, not all of which are diagnosable.
I would recommend following the suggestions mentioned above regarding ways to seek help. It may take time to find the right help but you should never give up. Try to choose a therapist who is knowledgeable about ASDs but who also has a successful record of treating individuals with depression and suicidal ideation. Depression and suicidal ideation are major concerns, particularly because you have seriously contemplated suicide. These issues need to be addressed immediately. I hope that you are able to receive the help that you deserve. Good luck. Please take care.