Dreaming

Y'all here lately I've been acting super weird in my sleep. The first time my boyfriend told me about something I kept saying please don't hit me in my sleep over and over again. Then the next time I was breathing weird. The next time I hyperventilated, the next time I was breathing weird again like I was having a bad dream, today he told me I was laughing and it wasn't my normal laugh. It was like I was talking to someone that I've never met and was super happy or something. He got upset about it. But I wake up and don't remember any of my dreams. Someone helpppp. What could it be?