Feeling like crap

I’m 36 weeks 4 days with #4 and today I have felt terrible. Baby is measuring 2-4w ahead so she’s been giving me problems to begin with but we are thinking she will come around when my last 2 came at 38w. Well I don’t know if it’s because I have a small cold but today I have absolutely no energy (like I can’t even stand up without feeling so weak), constant hot flashes, nausea, and a ton of Braxton Hicks/cramping, and I can’t even sit up without being so beyond uncomfortable. Anyone feel just beyond crappy before they went into labor? I mean, this goes beyond feeling 3rd trimester uncomfortable. The reason why I don’t think it’s sickness related is because I didn’t feel like this yesterday and I have been sick for about 5 days.