That's a tough call, it could be both, or just one reason.
I do not recommend,messing with your meds. but you should always consult with the prescribing physician first.
Certain medications should not be just stopped, many require gradual reduction.
Maybe what you are feeling is temporary? Maybe, it's not, that is why there is another good reason to contact your pdoc and/or therapist, to help rule out if this is something brewing.
As a preventative of possible de-railing.
Hope things work out for you.
Take care now,
DE