As promised, here's another link to a recent study indicating a connection between abortion and later emotional stress.
This one is "Depression and unintended pregnancy in the National Longitudinal Survey of Youth: a cohort study," published in the British Medical Journal, 324: 151-152. This study from January 2002 indicates that women who abort a first pregnancy are at greater risk of subsequent long term clinical depression compared to women who carry an unintended first pregnancy to term. An average of eight years after abortion, married women were 138 percent more likely to be at high risk of clinical depression compared to similar women who carried their unintended first pregnancies to term.