Mama, alam ko na nakakabahan ka, first time experiencing this is really scary. But please, if you feel any changes, stronger contractions, bleeding, fluid leaking, go to the hospital right away, ha. Don't wait. Your OB is guiding you well, and hospitals are equipped to help babies born at 33+ weeks.
Yung steroid shots na binigay nila, that's actually good, it helps baby's lungs develop in case labor comes early. Rest talaga, take it seriously kasi that's what your body needs right now. Since your panganay did okay even with preterm labor, alam mo na babies are stronger than we think, lalo na with medical support. Trust your OB's plan, they know your case best. Stay calm as much as you can, and keep communication open with them. You've got this, mama.