Why do I get Panic Attacks during very simple situations?

during those simple situations, you could be getting triggered by something which is causing the panic attack. try to find this trigger and work through it.

Anxiety or Panic attacks can range from a sudden drop in serotonin levels in your brain, to being over-stimulated for some time and you just never recognized it, and now it came out during a simple situation. Think of bottling things up. Maybe even that "simple" situation, could have been a slight, or a full-blown trigger. I'd actually rather not say you're "overreacting". Some may, some may not. Anxiety causes many things to happen to many different people.

Panic attacks can be triggered in really simple situations; like stress, loss, grief, depression, anger, etc. Panic attacks are different from everyone and they can be quite terrifying if experiencing one. Some may experience difficulty breathing or crying and thinking the world is against you. Panic attacks are generally caused by anxiety and depression but can happen in many other illnesses too. Panic attacks left untreated can turn into something called Panic Disorder and panic attacks can be triggered without any real trigger or warning and can vary in the severity. Panic attacks can be helped by seeing a trained professional like therapist to help with coping strategies.