Signs of labor.

So last night I woke up around 4:30am feeling very nauseated. I have really bad acid reflux and that’s what woke me up to begin with. I looked up if this was a sign of labor and it said it was. It said that some woman feel nauseated/ vomiting the day before the go into labor. I just want to know if any of you know if this is true or not. Please let me know cause my boyfriend if going to California tonight until Thursday.