My feet started to swell in the 2nd tri but I can't remember how many weeks I was. It started out just for a couple of days then went away for a while then came back and never really went away. Mine actually started with just the left foot and it took a while til the right one caught up. My OB said it was completely normal - a little unusual to have it in one foot - but still normal. He just told me to put my feet up at night - above my head. This would make the swelling go down overnight but a few hours into the next day up they'd come again.

During the third tri I only had two pairs of shoes I could wear & I couldn't wear socks at all as they cut off my circulation (apart from bed socks but they wouldn't fit in my shoes). For about the last month at work I could only wear the 1 pair of slip on shoes that were a size bigger than normal. It was winter but I never felt the cold on my feet, funnily enough. Even those became almost unwearable the last week of work (so at 36 weeks) so I went bare foot around the office for much of the day. My feet were huge but as everything else was normal my OB wouldn't give me time off work, even when I only had two more days to go. It was really uncomfortable for I'd say the last month or so.

My advice is to get your feet up at night & keep them up.