You'll be fine hunn, w, my 1st I was literally 75 pounds, gained 50pounds and my son was all squash in my big I belly lol. He was curled up in a ball and made it to 40weeks. I got induced though and I asked them. They only induce at 38/39 depending on the doctor.
I'm 38+6 and this started happening to me last Wednesday night. I have talked to my doctor about it twice and done a lot of research. It's actually an early sign of labor. The doctor brushed it off the first time bc it had just been one night, but when I went yesterday they gave me anti nausea anti vomiting medication. Good luck!!!