My SIL and 2 of her sisters all have Raynaud's. I'm not sure which type each of them has but I do know they carry gloves with them all the time, even in the summer. My SIL's fingers become like Lynn's, whitish yellow.

I am sorry you have to now deal with this diagnosis as well but at least you now know what is causing this symptom.

Hang in there and carry gloves and other warming devices like the ones you can put in your gloves and/or socks.