I Spend a Lot of Time By Myself

Alone time for me can be bad or good. Lately I've spent so much time alone and mostly in my head, that I've created false memories. After a whole day of no socializing online or in person interaction with another person, I woke up this morning thinking i went to lunch with a friend and we got into a really bad argument, but I never left the house. What the hell did i do yesterday?!