What are the consequences of having 3 abortions in a 18 month period?

Sterility: Frequent abortions can result in permannt steriliy or infetion.

None likely: If each abortion proceeded without complications such as fever or signs of infection, it is unlikely that there are any negative physical effects. However, there is no reason for you not to be using effective contraception.

Emotional trauma: If the abortions were all early, there is little evidence that even 3 abortions would harm you except for the possibility of premature delivery with subsequent pregnancies. On the other hand you put yourself at risk by not using birth control. No one knows the psychological effects but many women are emotionally traumatized by the experience.

See Below: Also 3 abortions can cause uterine scar tissue causing it impossible to have a subsequent pregnancy too.