The cold can accompany the heat and the vibrations. It is a severe freezing like feeling almost metallic at times but it has no physical temperature indication. No thermometer will measure this even though you feel it strongly. Also no amount of blankets or heating devices will be able to warm you up. This is the Lunar phase of the temperature sensations. It is normal.
Sometimes you can feel it coming up the front of the body as I did many years ago while I was driving and it scared me badly so I did my best to "will" it down.
So know this and know it is part of the process. Plug the left nostril and breath with medium but deep and perhaps rapid inhalations through the right nostril and this will in many cases give relief. - blessings - chrism
The cold can accompany the heat and the vibrations. ... So know this and know it is part of the process.