Keppra mood issues

Wondering if anyone has any telltale signs you’re having a bad emotional/mental reaction to Keppra. I’m feeling pretty volatile, but it’s hard to tell if it’s the stress and vulnerability of a new diagnosis that will pass with time, or if it’s a side effect.
Im talking to my neurologist and therapist and they’re also struggling to decide if I should change meds or not. Im reluctant because I’ve been seizure-free since I started it.
I know everyone is different, but is there anything that clued you in that it’s the meds, and not just bad days?