Dreamwalkwr

This dream is from about a week ago so I don't have the best recall now, maybe I'll start keeping a dream journal.
I was in a large castle that opened up into a pool. I became lucid when I dove into the pool and started breathing under the water. I dove down just to explore because it was beautiful and crystal clear. Somehow I knew that it would open up to the ocean deep below. I swam back to the top , (the castle was familiar to me) and because I knew I was dreaming I wanted to try something I havent done before. I tried to send myself into another universe. Maybe that will seem odd but I'm a curious person and I want to see what I can do. I found myself projecting through space but I didn't find what I was looking for. That's about when I heard the bedroom door open and my husband come bumbling through the room.
I kept still and re-entered back into another lucid dream where I was playing with astral projection. I leave my body and fly in my dreams but I don't know that it's anything astral. I also fly withought leaving my body. I wanted to try astral intentionally to see if I could become aware with clarity of my surroundings. I left my body and was blind. I could only see fog so I decided to focus on my other senses instead. I reached out and slowly trailed my hand through the air, it was cool and felt dampish like I was in a cloud. I felt around and it ended when my I touched anothers hand that took mine. It was warm and that's all I recall.