Yeah. If it isn't actually accompanied by emotions that suggest a cause, you really might want to see a doctor about that. If you also sleep on your side, go for the home sleep study if offered, it's worlds more convenient.
verb
move (something) into a different position with a jerk.
travel by hitch-hiking. informal
obtain (a lift) by hitch-hiking.
fasten or tether.
harness (a draught animal or team).
noun
a temporary difficulty or problem.
a knot of a particular kind, typically one used for fastening a rope to something else.
a device for attaching one thing to another, especially the tow bar of a motor vehicle.
an act of hitch-hiking. informal
a period of service. informal
Slanguagely: "There is a hitch in your get-along", implying "there is a difficulty with your system/process/activity"
I won't argue that the usage can change, and I could see how it could also be used to imply that one's posterior moves in a pleasing manner, but in my experience it has only been used to indicate an issue:
Marjorie Kimmerle & Patricia Gibby, "A Word-List from Colorado," in Publication of the American Dialect Society (April 1949) has this entry for the term hitch:
hitch: n. A crick ; a limp. Used only in the expression "He's got a hitch in his git-along." Said of horses and people. OED, A limp, a hobble, an interference in a horse's pace.
Which experience would this be? That is a Stack Overflow link you posted. But I would expect such a footless prescriptivist to behave in just so ill informed a manner; excuse my short patience, I understand this actually is your best that you're showing.