The swelling coming on suddenly could be a problem, so if you feel odd in any other way go to the dr asap. I don't remember ever having burning feet, but I guess they did feel stretched and kind of hot because they were so stretched.
I got bad burning in my feet from about 24 weeks onwards, not much swelling but if I wore shoes they would swell up soo fast! I was stuck wearing thongs for pretty much my whole pregnancy!!!
Watch the swelling but just try to keep off your feet and ice packs wrapped helps with the burning
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