Hai sayang! Okay first thing, if you're having contractions that feel different or anything suddenly changes (bleeding, discharge, very intense pain), go to hospital right away ya. Don't wait. Since doc dah give you the injection and cervix still tak open, just rest mesti and follow up with your OB. A few of my mum friends went through this too, sometimes perut keras is just practice contractions, sometimes baby just tak ready yet. Every pregnancy beda-beda. Keep monitoring, stay hydrated, and report any changes to your doctor. You're almost there!