Swelling in only one leg and ankle

Is it normal to have swelling in only one leg and ankle? I am hardly on my feet during the day. I work from home so I am sitting down the majority of the day. After work I usually make dinner and clean up a little bit, give my toddler a bath and put him to bed but I wouldn’t think enough to make me swell. Obviously I know it’s a normal part of pregnancy to have some swelling. I’m 35 weeks today. I’m just worried that it’s only happening in one leg. And I have a dent in my leg that’s swollen.