Help please!

Katlynn

I was 28 weeks as of yesterday and at 3 a.m. this morning I started having what felt like contractions with some spotting and on the way to the hospital, I started vomiting and shaking. They sent me home since I wasn’t dilating or anything but I’m really concerned about this. I feel better now, just kinda weak. Does anyone know if this is normal? I haven’t gotten many answers out of our hospital here.