The longer the stitch remains in, the more likely an infection will develop (ranging from 1 to 7% and up to 30% of the cervix was more than 3cm dilated when it was inserted). The most common type of infection is chorioamnionitis (or an infection of the amniotic fluid sac). Some physical signs to be aware of are:

	Having a fever (above 38 o Celsius or 100.4 o Fahrenheit ).
	Increased vaginal discharge, which may be irritating, or offensive smelling.
	Heavy bleeding and/or strong cramping.

If you are concerned, contact your caregiver.

Trauma to the cervix that may happen when the stitch is being inserted or tearing of the cervix from excessive pressure on it during the pregnancy or damage to the cervix during the labour and birth as it dilates when scar tissue has developed. In rare cases, the cervix may be completely amputated and/or the uterus may rupture.

Injury to the bladder from the procedure. This is very rare.

The cervix not dilating during labour (known as 'cervical dystocia') because of damage to the cervix and scar tissue.

At this stage it is recommended that a cervical stitch should not be offered to women at low or medium risk of a second trimester miscarriage, regardless of cervical length by ultrasound. Many caregivers argue that on balance, it is better to avoid using a stitch if at all possible, because the differences in outcomes for babies between groups of women having a stitch and those who don't are much the same. However, if you have lost one or more babies during the middle phase of pregnancy, this approach may feel right for you, despite the risks involved.

Information sources