36 weeks 6 days and I just don't feel right

This is my fourth baby so I should know but I feel like I forgot everything! Yesterday and today, more so today though, I just don't feel right. I'm kind of dizzy, not where things are spinning or anything but just a slight 'whirling' like feeling. I've been having BH for weeks but at my last appointment at 35 weeks my cervix was not effacing or dilating at all, still 3.8 cm long. I kind of feel like I'm going to throw up but I never do. Today I've been having the strongest BH I've had but still easy to walk and talk through, they aren't getting stronger with each one and are very irregular. I feel like I have to make a big poop but when I go, it's only a little bit. And while I'm going, I get this intense pressure and a painful feeling in my vagina. As soon as I'm done, the pressure and pain goes away. That's happened three times today. My body feels heavy all over, my arms and head just feel heavy and it's like I have to work overtime just to move and to the most basic of tasks. I just want to sleep and feel