Related/unrelated?

Yesterday was awful.
I had an unexpected and stressful event at 3am, which disrupted my sleep and left me drained and miserable at 5:30 when my alarm went off.
All day at work I felt out of it and exhausted. I had a weird thing happen. During a bad headache, I stood up to make my way to the washroom and then felt a bit of a head rush. Then, when I was sitting on the toilet (for a pee), I saw what could only be described as "stars" in my vision. They almost looked like little fireflies. They moved and left a little "tail" like mini-comets, maybe lasting half a second. They were bright white. I had no pain, other than the existing headache, and these "stars" only lasted about 30 seconds.
They were pretty, but what the fuck?
Did I have a stroke or something?
The headache went away and I haven't seen anything else since. I don't know if this was a Pristiq withdrawal thing, or just parts of my brain dying off.... Sighs.

Anyhow, after that bizarre stuff, I continued to have a day where almost everything went "wrong". I tried to take a step back and be mindful, but it just wasn't happening. I was incredibly irritable and burst into tears when I got home. The evening went a bit better. I took half an Ativan at 7:30 pm and was asleep by 9:30.
This morning, things are decidedly better than they were yesterday.