Just no jumping.. and my doctor said I was allowed to swim up until I started to dilate, it has something to do with the chemicals after you start dilating but he said some studies show that swimming while pregnant can increase lung development :) I swam until I was 36 weeks, I started dilating at 37 weeks so I can't get in now but I wouldn't worry he just said no jumping into pool.
I'm 32 weeks and go swimming almost every day it feels great.
You can go as long as you want you can even give birth in one too..... I'm 22 almost 23 weeks I still go in the river the water and swimming is good for you and baby
Do you kno How late in my pregnancy is it NOT safe?