Has it been hot in your area? (I'm sure it does occasionally get hot in Maine!) The heat can really do it too... and you do need some salt while pregnant but sometimes if you eat Asian food or pizza or something that's got a lot in it, that will happen too.
Remember your blood volume is really increasing now, and will for the next few weeks at least... and like you said you were on your feet a lot. I'm guessing it was a combination of too much standing (OMG that was 10 hours!!!) and possibly not enough water? I tend not to drink much when I'm more busy.
Remember your blood volume is really increasing now, and will for the next few weeks at least... and like you said you were on your feet a lot. I'm guessing it was a combination of too much standing (OMG that was 10 hours!!!) and possibly not enough water? I tend not to drink much when I'm more busy.