I Have Bulging Disk L5 Leaning On S1 Nerves. Had

I have bulging disk L5 leaning on S1 nerves. Had physio and disk pain like sciatica in butt down back of thigh has improved 90% but heel pain got worse... unbearable to walk in bear feet and after lying or sitting .. physio therapist said that since my back is healing my heel should also but it is not and therefore she thinks it is plantar fasitis .... but my doc said it is coming from back most likely. What is your take on it?