isi t normal to have really bad swelling in the feet? Im only 21 weeks 6 days but im having horrible…

isi t normal to have really bad swelling in the feet? Im only 21 weeks 6 days but im having horrible swelling. They end up turning purple and vieny but this only starts happening when im on my feet for more than 10 minutes. I was at walmart and ended up with feet extremely swollen, sweating , chest constricted and almost fainted. I mean my headache from the last fee days went away after i drank coffee but the swelling and pain and stuff isnt going away. Is this normal? i cant even be on my feet for more than 10-15 minutes before i just cant take it anymore. Its made me feel super sick and irritable because im in so much pain