Hello PaigeTWoods: Thank you for bringing your concern here to PC. I see this is your first post here. So... welcome to Psych Central. One additional forum, here on PC, that may be of particular interest to you would be the coping with emotions forum. Here's a link:

https://forums.psychcentral.com/coping-with-emotions/

And then here are links to a selection of a dozen articles, from Psych Central's archives, on the subjects of panic attacks, depersonalization, & pet loss that (hopefully) may be of help:

What a Panic Attack Feels Like

Tips to Cope with a Panic Attack

Stop a Panic Attack With Emotional Freedom Techniques (EFT)

How to Halt and Minimize Panic Attacks

https://psychcentral.com/blog/10-way...-panic-attack/

https://blogs.psychcentral.com/dysfu...in-its-tracks/

https://psychcentral.com/disorders/d...rder-symptoms/

https://psychcentral.com/blog/6-warn...tion-disorder/

https://psychcentral.com/lib/deperso...y-confessions/

https://psychcentral.com/blog/losing...g-a-loved-one/

https://psychcentral.com/lib/grievin...loss-of-a-pet/

https://blogs.psychcentral.com/heali...dium=popular17

I hope you find PC to be of benefit.