Night #2... again

So I have to share with you mamas because it's been one heck of a 24 hours. So basically I went to bed the night before last, feeling fine. Only to wake up at 5am, with stomach pain, diarrhea, which then led me to throwing up. One bath and two hours later I couldn't spew anymore. Finally I could go back to sleep😊 9am hits and I make a run for the bathroom throwing up again, at this point there Is literally nothing left in me. I then spent the whole day in bed, attempted to eat crackers, pudding, and then later on that day, tried some more solid foods. Stomach felt fairly good when I finally fell asleep at 1:30am ( I know, late...I was binge watching a show) well here I am again, but its 3:30am stomach sick, nauseated, had diarrhea, and back in the bath. I feel like I'm having major acid reflux, I did have it in the first trimester but then it had stopped. The past two days have been miserable days, any advice or idea as to why I could be suddenly feeling this way again. Is it concerning? This is my second pregnancy and no where near as pleasant. My stomach is in nasty knots. I'm almost 34 weeks and haven't even seen an OBGYN yet.