Preterm labor at 33 weeks

So it began as bad period cramps, that turned into waves, every 10 minutes. I had a doctor's appointment scheduled for later in the day but I knew to call. I went in and they did an exam and some kind of fetal protein swab. I was 2cm dilated and the sample came back positive. I'm currently in the hospital on magnesium sulfate and had a steroid shot just in case he wants to come early.