Gallbladder issues

Looking for advice from those who've had gallstones or gallblader issues. I'm 31 weeks pregnant and went to labor and delivery bc I had sudden intense stomach pains to the point i was doubled over getting sweaty and naseous. Felt just like labor contractions. I was contracting when I got to the hospital it showed on the screen so they gave me iv fluids and sent me home. Today I expiermeced another similar episode sudden intense stomach cramps I used the bathroom and the pain went away after that. What exactly did gallstones feel like for you if you've expiernece it before