Although exercise is generally beneficial to both the mother and the baby during pregnancy, your doctor may urge you not to exercise if you have:
Heart and lung disease in some forms.
Preeclampsia, or pre-eclampsia, is a type of high blood pressure that occurs for the first time during pregnancy.
Vaginal haemorrhage that persists in the second or third trimester.
Problems with the placenta.
Preterm labor during your current pregnancy.
A multiple pregnancy at risk of preterm labor.
Premature rupture of the membranes.