Today I got diagnosed and I'm feeling really anxious when I thought I'd feel relieved, anyone else go though this?

Today I got my autism diagnosis after being in a waiting list for over 3 years, and while I did feel initially relieved, any time I now think about it I just get filled with anxiety which leads to a bad headache.

Anyone else go through a similar experience, and if so, how did you handle it? I would really appreciate any help.

(Apologies if I don't reply in the comments at all due to my anxiety.)