Feeling weird

So I’m 36 weeks today. Around 4 this afternoon I started feeling clammy, shaky, and light headed. I thought it was my blood sugar being low (im not diabetic, but was raised by one so I learned the differences). I ate, and rested for awhile hoping it would get better. But it hasn’t...I still feel the same way (10:30pm right now) and now it’s  accompanied with a feeling of needing to throw up but it’s sitting in my throat. My hands feel kind of tingly now also. Was wondering if anyone experienced this and what it was? Should I get checked out or is it possibly just from getting later in pregnancy? This is my third baby but never had this issue with my first two. Also I’m super out of breath, even with only walking a few feet.