I understand your concern.
As per your description,you can try some self care remedies like
Hydrate yourself with plenty of fluids and try prune juice.
Also try stool softener once again.
Warm sitz bath can be helpful.
If you still have impacted stools, you will need to get a manual evacuation at ER or nearby doctor.This needs to be done by a trained person as manual removal can stimulate vagus nerve and cause heart rhythm irregularities.
The method usually involves use of mineral oil enema
to soften stool followed by use of a gloved lubricated finger by the person removing the stool to enter rectum and slowly breaking up the impacted stool into small pieces for removal.Enema may need to be repeated after manual removal to allow all faeces to come out.
If you are unable to pass gas with impacted stools then visit ER now to rule out intestinal obstruction.
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