Anybody else going through this or have?

Yesterday at exactly 31 weeks i came home and realized my underwear was covered in brown blood and when i wiped i had bright red blood, we immediately went to the ER and they did an exam and basically my cervixs is really irritated.. no infections.. i was having contractions every 3-5 mins.. after spending 6 hours there i was finally sent home and to keep an eye on the bleeding and if the pain of contractions get worse, they have actually gotten better.. my concern was the bleeding and contractions, is this something that can send me into pre term labour? I had a friend go through this at 31 weeks and had her son at 32... any help would be appreciated.