I have had ocd since i was really young. I recently have been getting really worried after a night out incase i have cheated on my fiance. I would never cheat on him as i love him with all my heart and we're even getting married in a couple of months. I was at a night in my brothers house the other night and had a lot to drink. I got a taxi home then the next day i was panicking incase i cheated with the taxi driver. I am going out of my mind. Is this a common fear for people with ocd? Please help