How long before every little thing stops setting me off?

I am very sad.

• The neighbor went by with his dog. Nobody barked.
• I used to pick up milk when I was on my morning walk with Blue. I'll probably cry the next time I walk to the 7-11
• And the next time I walk to the mailbox. When I left the netflix by the door I thought, I have no reason to walk past the mailbox now.
• Today I can barely even look at the park.
• When I come out of the bathroom there is nobody guarding the door.
• I've been up for 13 hours and I just ate a banana so that I could take an ibuprofen because my tooth hurts. It's the first food I've had all day.
• I look over my shoulder before pushing the chair back from the desk to be sure I don't run over her tail.
• Let's not even talk about coming and going from the apartment.
• I'll probably cry the next time I go to the sunset at Rock Harbor. Though to be honest she was too sick to run on the beach the last couple times I went. And already that was weird.
• I have no energy or focus to actually do anything, but any time I let myself not do anything I start to cry again.
• She was sort of comfy on my lap when we drove to the emergency vet. I'd have sat there for a minute or two to savor it if I'd realized it was the last time we would cuddle. I was petting her at the end, but it wasn't the same at all.
• I'm very tired but I don't want to go to bed, ever.
• I know, it's only been 12 hours and I should cut myself some slack, but school does not stop, even for this, so I've only got about 12 more hours before I have to have my head on straight again.
• No one to share my slice of cheese with when I make a sandwich
• Really, at the moment, just walking into the kitchen seems to be enough. No one to reassure that I'm just making a cuppa.
• And it has just occurred to me that I will wake up in the morning and not go for a walk at all. On the one hand, maybe I should. Do a half hour jog in the mornings, clearly it would fit my schedule. But the thought of going for a walk without her? Now I'm crying again.

I am going to attempt sleep. I will try to have something less depressing to post about sometime during the week.