Please help me. I'm experiencing derealization and it's been a week already and no better. I've tried meditation and grounding myself in various ways like 5 things and snapping an elastic band on my wrist etc. Nothing is working. I'm on a new medication (Fluoxetine) but only on day 5 so it hasn't kicked in yet. Nothing feels real around me. It's like I'm looking through a glass window, it's constant, I'm lightheaded all the time too.