I had this during pregnancy and it was quite unsettling, but it's actually pretty common around this stage because of the hormonal changes and extra fluid retention pressing on nerves. Mine got better after I adjusted my sleeping position and made sure I wasn't crossing my legs too much, but it's definitely worth mentioning to your gynae or PD at your next visit just to rule out anything else and get some proper advice on managing it. In the meantime, try taking breaks from activities that make it worse and see if certain positions help, but do get it checked out to be safe.