Dilated cervix and swimming?

Katie • Mom of two boys, both born in July 2 years apart!
Had a checkup yesterday and learned baby is head down and engaged and I'm 1cm dilated! Woohoo! I'm 36 weeks and a few days. I know it could still be a while until I actually go into labor but is it ok if I go swimming in a lake this weekend? My doctor didn't say anything yesterday about things I can't do now that I'm dilated but I thought I'd ask around! Thanks!