nearing due date-feeling SICK

Tavia • Mama of a 7 year old and 4 year old. Expecting baby number 3 in November 2024.
I'm 35 weeks today and I literally laid on the floor of my office for two hours trying to breathe through nausea and the urge to leave work. I was completely fine yesterday. Is it normal to start feeling sick near due date? 
I've been on my sofa since I got home. I didn't eat anything weird or out of the norm. I'm so excited about being so close to meeting our daughter but ughhhhhhh not looking forward to spending the rest of my time feeling like this.