Remedy for Pain from New Dentures?

I have sore and swollen the gums after extraction and new dentures. It's been about 3 weeks. I am using all tips, taking ibuprofen, using Oragel, and freezing both plates. My dentist charged over $5000 and acts put out with my adjustments. Thankfully a dental assistant helped me. Any and all suggestions and time frames?

By Marie B.