Nerve/nipple pain after mastectomy

I had a single mastectomy (skin+nipple sparing) 5 days ago, with implant reconstruction. At night time I’m experiencing excruciating pain like a red hot poker in my nipple area. Spoke to BCN who spoke to consultant to confirm it’s likely nerve pain. Anyone else experience this? Much worse at night, paracetamol ibuprofen dihydrocodeine don’t touch it. Can’t move without crying out. Then it can go like a light switch has been turned off.
Any tips to prevent or deal with? Long weekend means can’t phone GP for any other meds.

I have had a mastectomy but not suffered the nerve pain in these areas as I had nipple removed, but would expect you need a med specifically for nerve pain which those you have tried are not. Hope you are able to manage til after weekend and then able to get something to help xx