Anyone can relate to my symptoms please? My Dr says I have Adhd.

He gave a questionnaire to fill but already is convinced that I have Adhd. I also have depression because of some thoughts that are going in and out but not leaving my mind. 1. I am overthinking everything and everything triggers me. 2. I forget things too easily 3. there is this mood swings from lowest to highest just like a roller coaster. 4. My dr prescribed me SSRI and after every exact 4 days i have 2 worst days. Where my head hurts and I get into a deep depression and feel worthless. 5. Somedays I feel so calm as if there is nothing wrong with me and the other days. I hate everything and everything seems a burden on and I feel like running away from all my responsibilities. 6. My responsibilities seem so heavy on me even though they are nothing Any help guys.