3cm, membrane sweep, and blood tinged discharge yesterday...PAINFUL contractions every 8 min this morning! Im just confused and doubtful because TMI ive been constipated... Is it causing these pains? My whole stomach tightens.n.hurts like hell every 8 min on the dot. L&D nurse said it sounds like early labor despite my stomach problems! She said to labor at home as long as i can, I will try to wait til they are 5-6 min apart.