Swelling?? Please help

Rebecca • I live in the uk....twins due in a few weeks 😊
Hi ladies I just wanted some advise, I am away for the weekend and have been at the beach and done a little shopping today but my ankles and feet have swollen until they are unrecognisable getting worse as the day went on, the thing that worries me is that I am used to being on my feet at work for at least 10 hours a day (I'm a nursery nurse and nanny) and I have never swollen at all, and was sitting in the beach for most of the day and is much cooler here that at home...do you think I should worry? I am only 23+2 weeks...thanks.