I usually don't seek advice online, but I looked for sites on grieving to make sure that I'm not going crazy.
I came across the following site that was really helpful to me.
One section in particular had amazing insights about the difference in grieving for a pet vs for a person.
Someone who has never been owned by a pet wouldn't understand, but everyone else will.

https://www.recover-from-grief.com/c...th-of-pet.html