Swelling and redness !! Help please

I’m currently on holiday in China. I’ve emailed my obstetrician but he is out of office till Monday.

I know flying causes swelling however, I’ve been here since Monday and it’s now Saturday.

My feet, my fingers and my ankles are swelling up quite badly.

Could be from sitting, standing or lying. Doesn’t matter.

Also the bottoms of my feet have a redness to them.

Is there anything I should be concerned about, I didn’t think swelling at 16 weeks was even possible :/