People can show signs of HD as early as childhood ("early-onset HD").   There is a bit of a "bell-curve" in the onset age of HD.  I am no expert but from what I remember the peak was somewhere in the 40-50 year old area.  Early onset (childhood) being on the left of the bell curve and very rare...and late onset (70's, 80's) being on the right of the bell curve and not quite as rare as early-onset.  So you're 23, that would be on the rare side...I mean it's possible of course, but given the timing of just finding out about your mom, this could be psychosomatic.  Finding out about about a parent having HD is traumatic (whether you know it or not, whether it has hit you yet or not).

How was your mom diagnosed?  Was it part of a "program" where they offer her and your family support after the diagnosis?  I know this is available in many states...an HD program that has "family support" as part of the follow-up for diagnosis.  If this is the case, you could find benefit in leveraging the help that is offered there.

Otherwise, a neurologist would likely be able to tell you whether you are experiencing HD symptoms or not.  They has specific tests that would validate what you are experiencing as either HD related or not.

Charlie