Studies on psychological responses to abortion in the US suggest that severe negative reactions are infrequent in the immediate and short-term aftermath, particularly for first-trimester abortions. Women who are terminating pregnancies that are wanted, who lack support from their partner or parents for the abortion, who have conflicting feelings or are less sure of their decision may be at higher risk for negative consequences.

Science, April 1990

Adler NE, David HP, Major BN, Roth SH, Russo NF, Wyatt GE. Psychological responses after abortion. Science April 1990; vol 248: Issue 4951, 41-44.