Yes you can get pregnant again after abortion. It is recommended to use birth controls or contraceptives if you do not want to get pregnant. In case you want to conceive than wait for at least two weeks after abortion. As women is susceptible to bacterial infections after abortion for one week.
Abortion by abortion pills can be performed within nine weeks of early pregnancy of gestation counting from the first day of the last menstrual cycle. If the pregnancy is beyond nine weeks than surgical abortion is to be carried out to terminate unexpected pregnancy.