First ask yourself one question. You know those guys who wear obvious rugs, I am sure you have seen them around before. They are usually older men, and they wear a wig that looks so obvious, so unnatural , does not blend, has a different color, is wayyyy too thick etc etc. Ask yourself if you have the aesthetic sense of one of those guys? If your answer is no. And you have decent vision and common sense. Than ask yourself how you looked. Was there anything super obvious? If the answer is no, its probably in your head. the only way people are going to notice, especially .large amounts of people like you are saying, is if something is REALLY wrong. Something would have to be very obvious.