Bleeding at 27 weeks?

I went to the bathroom yesterday, and found a lot of blood in my panties (sorry tmi).. And then I had to lay because if I stood, blood would gush out. The blood was dark/brown. I went to the hospital and was having Braxton hicks contractions. They told me my cervix was not open so they could not say exactly where the blood had came from. I had a horrible head ache the whole day and back aches! Anybody else experience this, or something similar? Yikes!