I think it is worth probably talking with a mental health professional about your experience. Even if you feel normal, you may not be the best person to judge whether you are actually behaving normally now or not. It is good to arm yourself with facts and opinions from experts, even if you choose not to act on the information now. And it can be useful to share the professional diagnosis with trusted friends or family members so they can help intervene and get you help if it happens again, so that next time it doesn't go on unchecked for years and leave your whole life in ruins.

That said, the most brilliant people I know all have some kind of mental illness or substance abuse issue they seem to be managing. So you are not alone in that respect.

I never had a psychotic episode, but there was an 18 month period where I strongly considered suicide almost every day despite outwardly exhibiting success and normalcy. I made many elaborate plans but never quite worked up the nerve to carry them out. Nobody had any idea at the time, and if I had killed myself I am certain it would have been one of those news stories where everybody says they never saw it coming. You never know what people are going through in their minds.