Hey. (18, male)

I'm recently using Sertraline to cope with my depression and social anxiety but I'm feeling pretty bad right now:
The thing that is annoying/scaring me the most is how abruptly my mood changes in the evening, getting worse at night. I'm sometimes getting anxiety attacks and am really stressed out about literally anything.
Racing/random thoughts is another symptom which I associate with psychosis but it could possibly be due to the anxiety attacks as well.

Furthermore, when I'm in stress situations such as going to a restaurant with lots of people in there, I feel apathetic, hear people talking unpleasantly loud and the other sounds are very dull/numb.

On the other hand I feel completely fine when I'm sitting in front of my computer doing stuff.

When I wake up at morning I'm feeling rather good and chilled.
Oh and, by the way, my grandmother has schizophrenia so I'm kinda predisposed which is making me even more uncomfortable.

To sum it all up:
- drowsiness, dizziness
- anxiety attacks
- auditory hypersensitivity
- racing/unrelated thoughts (unpleasant)
- things feel unreal/weird when not doing something I'm used to
- apathy
- hypomania (I guess?!)

Please don't tell me to go see a doctor because I will but I just need some mental support now. I'm going crazy thinking these are the onset of a psychotic disorder.