Preterm Labor

I am 28 weeks and 5 days and I went into preterm labor Monday night, my Dr stopped my labor and gave me 2 steroid shots for my little guys lungs. She also did the swab test to check for early labor which I tested positive for. I have 2 other boys never had this with either of them. I'm a nervous wreck about this not knowing if my baby is coming early or not. Has anyone else ever experienced this and if so how early did your baby come after steroid shots?? Any information would be greatly appreciated. Thanks!