Is it normal to think about sex all the time?

Im a twenty eight year old female. My girl and I have amazing sex almost every day. But as soon as were done im thinking about when we can have sex again. Everything in my life is sexual. For example we can hardly have a conversation because im always making sexual comments towards her. The other day she admitted that she is having a hard time keeping up with me. She also gets irritated at times because of my thoughts. So tell me people am I the only one like this?