Placental abruption is when the placenta becomes detached from the wall of the womb. You may feel a sudden, constant pain in your tummy with or without contractions. At the same time, you may start to feel really unwell and in some cases you will have fresh bleeding from your vagina. The baby may move less, or stop moving. If you are beyond 24 weeks and all these symptoms occur, then you must get straight to your local hospital by emergency transport. If you have a small amount of bleeding and pain, then you should seek advice from your midwife a doctor who may well want to do a check up of you and the baby.