Hello, my name is Dr.Dorina Gurabardhi. I understand your concern.
Your symptoms are related to blood circulation. Raynaud's phenomenon is an abnormal narrowing of the blood vessels that constrict with cooling of the fingers or toes.
Some advicrs that I can give to you are :
1)Wear gloves to protect your hands from the
cold.
2)Wave your arms in a circular motion to force blood out into your hands.
3)Blow warm air onto cold hands.
4)Tuck your hands inside clothing next to warm skin, such as your chest, belly, or armpit.
5)Warm your hands by running warm (not hot) water over them or rubbing them together. This will help improve blood flow to your hands. Be careful not to burn your hands.
Hope my answer was helpful, if you have any other questions I'll be glad to help, thanks!