I also did water aerobics when I was pregnant with my son and I greatly enjoyed it I think it helped me have an enjoyable and easy pregnancy. I do not recall ever talking to anyone in the locker room.

Do you have Bluetooth earbuds 🎧? If you do, you can listen to music, an audiobook or a podcast while your smartphone is in your locker and you go about the business of changing into a swimsuit pre-workout. Post-workout, I am not clear how you are even trying to strike a conversation if you are in the shower.

If you focus on your listening material, you won't be starting those conversations that lead to frustration for you.

And obviously do not quit your rehab because of that. Water aerobics is one of the best rehab modalities. Really, it is unmatched. Why would you quit something so good just because other participants are not good conversationalists?!