what is this called ?

Maybe you just discovered you're an Empath. If you google "30 traits of an empath" and all 30 things you recognize yourself into, or at least 25 of them, you are one. I am one. I often get emotional without knowing the reason, until I realize someone came into the same room who was feeling sad and didn't want to show it. The more people try to hide their sadness, the worst I feel. Aso when someone lifts up their heart to me and they feel better afterwards, then I feel like an emotional mess myself afterwards, because I picked up their negative energy as if it became my own. ... OR it could just be hormonal, which is quite normal for your age to feel different emotions because of hormonal changes.

Anxiety

Depression