thanks for your query.
I hope and assume that the abortion
you had was under medical supervision.
Also, you need a follow up check up after any abortion ( medical or surgical ) to be absolutely sure that the procedure was complete.
And that there are no retained products of pregnancy
inside the uterus
, which can cause pain and infection like what you described.
No, fingering cannot cause instant infection.
You need to have a follow up check up with your doctor to rule out that the abortion was complete.