A swimming pool and hot tub are a little but different than a lake.
I went swimming in the lake, swimming pool and hot tub as well...lol. It was all fine. You should shower throughly though. But just to be on the safe side I would ask your ob or midwife :)
It's recommended if your pregnant not to swim in rivers or lakes due to bacteria
I would ask your ob.. I think you might be fine but you never know!
I think you will be fine just shower after
There is a lot of bacteria in lakes.