Father, 55M confused and can’t remember anything after shower.

Hello, my father 55M came out of the bathroom after shower very confused and unresponsive, only saying that he had to do something but not answering questions. He paced around the house for around 5 minutes and finally stared to notice me. He only said that he doesn’t remember anything. I asked him what day it is, what year, what he did today etc. and he said he doesn’t know or remember literally anything. I tried to tell him about his day but he only repeated that he doesn’t remember anything and he was very surprised about everything I said. After about 20 minutes of me telling him everything I knew about his day he started to recall some things himself but he insisted it was only dream. After about another 20-30 minutes of repeating what he did today, what he was supposed to do tomorrow etc. he remembered almost everything but not how he went to the shower or how he showered. It seems like he only forgot about the most recent day or two. He didn’t have slurred speech or any physical symptoms but he was and is under a lot of family and work related stress recently. He doesn’t take any medication or had any prior problems like this. Should I be scared, go to hospital with him? Please ask any questions about things I may have not written about but are important for potential diagnosis.