I'm in the maternity ward. In the evening, there were brown discharge.…

I'm in the maternity ward. In the evening, there were brown discharge. And they took me by ambulance. After examination, they said that I have an opening of 1.5 fingers ? but they told me to lie down and I lay down. They will observe for 3 days. They will inject intramuscularly so that the baby's lungs work, if premature. And they will give tablets to lengthen the cervix. ? I'm so worried. I'm lying down and my stomach feels a little tight. But discharge as it was a bit after 4-5 hours in the evening, has not been since then. I'm afraid about the baby ? let everything be well ?????