What would you do if this happend to you?

A couple of months ago i started to hear voices . I always seem to hear them as soon as I get in bed. I do not hear anything during the day. I'm wide awake, and stay awake trying to hear what's being said. It sounds like the TV is still on in the living room. These voices are low and I lay there trying to distinguish gender and strain my ears as to what is being said. You can tell if its a man or woman. One time while listening, it was a man and you could hear his different tones of voice as if he were speaking to a group of people. Another time it was a man and woman having some type of conversation. Another time the tone sounded like they may have been arguing. It's not scary to me, it fascinates me. I would just like to know what is being said and what/who is causing this. For the first time one night last week, I heard the voices of a man, woman and what sounded like a much older woman having a conversation and also for the first time I heard a whole sentence of what the man was saying. I should have written it down. Right now the only word I remember him saying was the word "history" or "historical." This happens on an average of 3-4 times a week.