Pregnant in a surgical specialty

Was curious if anybody has worked up to right before their due date. I am pregnant with twins and am strictly a surgery PA. in the OR M-F, plus a little hospital rounding/discharge in my free time. My busiest days are usually Tuesday and wednesday. Monday, thursday and friday tend to be easier and shorter days. I am currently 18 weeks pregnant with twins and was curious has any worked in a surgery specialty where they were on their feet all day up until they were going to deliver? I ask cause my job doesn’t really have a light duty option, I don’t see patients in our outpatient clinic