Suggest Treatment For Rib Pain

I fell from a ladder 5 days ago and damaged my ribs...the x-ray does not show any break...but was told it's not uncommon for a fracture not to show up. DR says the ribs are badly bruised and could have cartlilage separation as well as being fractured. The keeps getting worse. Day 5 and the pain is worse today. How long before it's starts to get better and has the pain peaked?