Hi John, Sorry to hear you are having a rough time. You might find this page on our website useful for anxiety anxiety https://www.autism.org.uk/advice-and-guidance/topics/mental-health/anxiety
And in general, this page has a few other useful resources for those suffering other forms of mental health anxiety https://www.autism.org.uk/advice-and-guidance/topics/mental-health
As Pather27 as mentioned - The Samaritans is a good place to contact if you are ever experiencing thoughts of selfharm, please do call them if this happens.
Hope you find something there useful,
SarahMod
Hi John, I am sorry to hear you have been feeling this way and for so long. I would recommend talking to your doctor about the above if you have not tried to do so already or calling another support line such as the Samaritans (you can call them on 116 123 for free). If you feel anxious going to the doctors, it is possible to arrange phone calls, or even talking over text sometimes too. If it would be easier, you could even send them the exact above message so they can understand how you are feeling. But I would recommend seeking medical support because of the panic attacks and headaches.