Hating Work Lately

Before being pregnant I loved going to work and I still do love my job. I’m 24 weeks and a general surgery PA so it’s a lot of hours, many of which are standing in the operating room. I’m on call 17 days this month which is 24/7 too. Well over the last month or so I’m increasingly dreading going to work. I just feel so tired and unable to keep up at the stamina. I get home and my feet and legs hurt so bad even doing everything I’m supposed to: compression socks, well hydrated, eating right, etc. Some mornings it’s verge of tears not wanting to go and bear the day. Today is one of those days. Anyone else feeling this way too?