Hi Suzi,
No, don't try giving yourself a sweep! I just read this:
'A membrane sweep must be carried out by a Midwife or a Doctor. The membrane sweep works by inserting a finger into the neck of your womb (cervix), moving the finger around in a circular motion in an attempt to separate the membranes from the neck of your womb. This might sound simple but there are several things that must be taken into account. A membrane sweep is only recommended to women who are overdue. Before the procedure the midwife will do an abdominal palpation, feeling the position of the baby, whether the head had engaged or not for example. The position of the placenta must also be known before examination and the babys heart checked before the procedure and afterwards to ensure that all is well. A membrane sweep can be uncomfortable and there may be some bleeding afterwards. The Midwife will know if the cervix is favourable as the fingers must be able to go through the cervix to reach the membranes.
If you go overdue a membrane sweep by a midwife or doctor is a valid procedure for stimulating labour. If it is successful you will usually start in labour between 24 and 48 hours. The chances of you going into labour are increased if your cervix is softening and preparing for labour itself. Your doctor or midwife will be able to tell you this from the findings of your examination
Recently antenatal guidelines recommended a membrane sweep at 41 weeks plus, but it is not routinely offered to women who are not overdue. A decision to offer it is usually discussed at around 40 weeks. If it is offered too early it is more likely to fail because your cervix will not be ready.'
So there we have it!