True repentance is loved by Allah who is ever forgiving.
In terms of abortion, if it was done by a doctor then the doctor has to pay the diyah but since you yourself did it, then you have to pay diyah to the child's inheritors (who will not include you or the father of the baby)
It is your responsibility to pay the diyah which has to be paid to the Hakim e shar' (Islamic judge) but given the current government structures where the concept of Islamic judge per se doesn't exist, if you can please contact your marja's office and give them the information including how many weeks your pregnancy had progressed to so they can calculate the diyah.