Zyrtec is making me happy and focused??

About a month ago, a doctor prescribed me Zyrtec to deal with a persistent ear infection (had them a ton as a kid, had tubes put into my ears, and they eventually stopped--first time in maybe 20 years that I'd had one). And Zyrtec is making me feel consistently happy, and focused, and calm, which I've never really remembered feeling for more than an hour or so at a time. I'm able to recognize anxious thoughts and just let them go. I'm feeling motivated and hopeful. I also wake up happy, which is new.

Is this magic?? Or is it Zyrtec. (Or something else?)

For context, I'm on 25 mg Zoloft for anxiety, depression, and pure-O OCD.