I'm 27 weeks pregnant .. went to the hospital and the said that i'm bleeding from the cervix externally what does this mean?

Not good.: Cervicitis, placental abruption, preterm labor, fibroids, polyps, placenta previa can all present this way and are all bad news. Seek care as soon as possible with a maternal-fetal medicine specialist to get the optimal outcome out of your pregnancy. Avoid all aspirin-like drugs (motrin, aleve, (naproxen) advil), ssri antidepressants and intercourse!