Short term joint pain isn't rare and usually indicative of nothing except minor inflammation which makes the joint more sensitive to irritation in a self fulling cycle. Usually it clears with a bit of rest, or at least reduced use.

However, since it started with changes, I'd first change back to the prior position, and see if that changes things. If so, you know what you need to do. If changing back to the old position doesn't help, give it some rest, and try again, first in the old position, and if it's OK, you can try the new one again.