Swelling 34 weeks pregnant

My first pregnancy I had severe preeclampsia and had to have an emergency c-section at 33 weeks. I am now 34 weeks pregnant in my second and last pregnancy. The past 2 weeks my feet have slowly started to swell but it’s not anything like it was with my first pregnancy. But as the days go on my feet and legs are so swollen I can barely walk at the end of the day. I do work on my feet for 9 hours everyday so maybe that is contributing. I have been checking for pitting and have no had any until today. It’s in my legs pretty bad. Should I be worried or is this just normal symptoms to the end of pregnancy. I don’t want to bother my doctor about it if it’s not serious because I know there are mothers worse of than I am.