Sad after Heartstopper?

A few days ago (Thursday), I watched the series Heartstopper (seasons 1 and 2). I think the series is really great, but since watching it, I've been feeling sad, or rather depressed. I found out online that there's something called "Heartstopper Syndrome," but it's more common among queer people in their 20s and older who are sad that their youth wasn't like that. I, however, still have my youth ahead of me and am probably straight (I'm not sure, but that's beside the point), and yet I'm still totally sad right now. I can't stop thinking about the series. I've lost my appetite for three days, I keep crying, and I'm having panic attacks. That's why I wanted to ask if anyone else (my age) feels/felt the same way and how it all goes away. I know the question might sound a bit weird, but I'm grateful for any answers.