I had premature labour with both of mine but the amazing hospital I was with stopped it for was around 26 weeks the night before I lost my mucus plug didn't have a clue what it was at the time and also had the "big clear out" I was in the toilet most of the night of God it wasn't fun... The next morning I was fine thought I must of ate something funny. Went to work then after about 2 hours of having braxton hicks and back ache I rang my midwife no surprise she didnt answer. . Rang the hospital then said come straight away. Turns out I was in labour had to have steroids and other injections. Eventually it stopped if I didn't go it I would of had a very early baby. Always get checked!!!