Loose stool for days

Currently 28 weeks with baby #3 and I have had a solid poop in days and have been so beyond exhausted with little appetite. I bring my older two kids to school and immediately go back home to bed. Braxton hicks started around 25 weeks but it seems like they’re getting a little stronger and more frequent by the day. All I do is drink water, so I know I’m not dehydrated. Part of me is hoping I’m just sick, but another part of me feels like this little girl is gearing up for her exit soon