Sally Russell, co-founder of Netmums, who jointly founded the report, said antenatal depression can make it very difficult for parents.
Half of the 260 women surveyed in the The Royal College of Midwives (RCM) and Netmums study revealed that antenatal depression affected their relationship with their baby.
More needs to be done to spot and support women suffering with antenatal depression, experts have warned today.
The Royal College of Midwives (RCM) said that more attention needs to be paid to the condition, which is less known and talked about than postnatal depression.
The RCM made the comments after a new poll found that more than a third of women who suffer depression during pregnancy have suicidal thoughts.
And four in five mothers surveyed who suffered with depression in pregnancy went on to struggle with postnatal depression.