I’m 24 weeks or a day or two away from 24 weeks. (My first)

Out of the blue today around 2, the right side of my mid back and down starting hurting, to the point where I kind of felt nauseous, it got pretty strong for a 5-10 minutes then went away, then came back and went away.

When I lay on my side it seems to disappear. Then when I get up it starts back up?

What in the worldddd?

I drink a lot of water, no blood or ab cramps or Braxton Hicks tightening.

.... doesn’t seem like early labor or anything but still worries me🤷🏻‍♀️