Why Is My Girlfriend Experiencing Clitoral Pain, Swelling, Itching, And Irregular Bleeding After A Medical Abortion?

My girlfriend did abortion after 5week pregnancy with medicine she bleed about 10days after the bleeding stop she test and results was negative and after that she feel pain in side part of his clitoris one side swelling a little and feeling like etching and when she touch it feel pain and in her next period she bleed about 10 days not a heavy bleeding and some time she bleed unexpectedly why is that