Ultrasound gremlins

I’ve been having gastro issues for a week or so, and after a runaround by the clinic, I’ve gotten a virtual visit, some bloodwork done, and an ultrasound scheduled to check out my organs.
But in order to have the ultrasound scans, I can’t eat or drink anything after midnight.
What am I, a gremlin? You can’t feed me after midnight or I’ll turn into an evil version of myself?
I guess I can go take a hot shower before the exam… and as the water hits my skin, it begins to bubble and pop out little balls of fur.