HELP, servere brain fog and sleeping issues after 0.5mg finasteride stopped

19 year old that Took 0.5mg Finasteride once a day to halt hair loss for 1.5 months. Only noticed a stop in morning wood while on the drug as a side effect and still able to get a full erection with good libido. Noticed slight brain fog which didnt link with the finasteride on monday the 9th. Waves of brain fog, memory loss, confusion on the tuesday and wednesday where the time between the waves got shorter and shorter. Still able to get an erection with sometimes morning wood.

Last dose was on the wednesday, and the brain fog has now been permanent for 4 days with difficulty sleeping. Move to university was stressful during that time as couldnt coordinate thoughts properly. Lighter brain fog in the morning but gets heavier as the day progresses and i do more things. No other side effects since stopping

Have i got PFS? Thinking of going on a water diet and avoid all prescription drugs.
Worried that i will never be normal again :frowning: