Blood

Angela
I'm 39 weeks and 4 days, and I had blood in my underwear when I woke up this morning. I changed and put a pad on. I called labor and delivery, and they told me to monitor the amount of blood and movement of the baby. Although my underwear had quite a bit of blood, my pad doesn't have much. I thought it might be the mucus plug, but my fluid wasn't clear/yellow/brown/pink. Is it from the cervix effacing and dilating? Did anyone have this? Should I go to the hospital?