Swimming while pregnant

I’m 35+2 today. I went for a swim for the first time and swam on my back. My husband lifted me up out of the water for fun and we both had to laugh at my belly. It was triangle shaped!!!! The baby was right down the center on my stomach and the sides of my belly fell straight down but it was tight and caused by belly button to poke out a bit.

Is this normal???😂 was I just in a weird position while having a BH?????... first pregnancy so I’m clueless when it comes to my body right now🤷🏼‍♀️