I'll keep it hypothetical, despite concern and urging for diagnostics etc. by the GP, there is no diagnosis yet to speak of. I'm just desperately curious to know what others might do...
If you had no one that you felt you could trust: no one in your family; you don't have any friends, save for your elderly dog; whilst you work full time (and get along with everyone there), you don't 'get personal' with anyone at work.
If you're Aspie, but have a long history of misdiagnosed mental illnesses and have previously (albeit temporarily) been stripped of your decision-making rights under the law because of them, at the hands of your ignorant family and doctors.
If your life to this point has made you realise that there is little to no reason to live anyway and you know that anyone you tell will pressure/compel you by force to undergo treatment that you genuinely don't want.
If, despite these things, you don't really want to die alone or to hurt anyone that you might still care about, and long for just one person that could really understand and maybe even support you...