Hi. I think the most important person to ask is your doctor who put in the pacemaker. Follow their guidance. But I've been told that the first three months after placement, you shouldn't engage in swimming mostly because the site where the implantation site can become stressed. And after three months, you can swim but have to avoid strokes that could damage the pace maker like butterfly. I know there is conflicting information on line about this so again, check with your doctor. It's my understanding that it is very few cases that there is any sort of 'shock' from a pacemaker when swimming although it has happened. But rare. https://podcasts.ufhealth.org/heart-devices-and-swimming-pools-a-new-angle-on-pool-safety/