I’m sorry you’re having pain. However, your post surgery swelling hasn’t had time to heal. Talk to your doctor about the pain and ask them to help you manage it. Sciatic pain can be many things and different to many people. I have had sciatic pain for over 30 years. It comes and goes, but it mostly comes when I sit too much and I don’t do the light exercise and stretch stretching that I should. You can try an MFR therapist And see if they can tackle your sciatic pain. They do a great job on mine and it goes away only to return if I don’t stop my bad habits!