@kniquy, it sounds like you are I are experiencing exactly the same thing. All through the year I was fine. No GAD anxiety.
But mostly through the month of January, I've had these bouts of general anxiety that concern me.
I just found that there is such a thing as "seasonal ANXIETY disorder." You can google it. Sometimes it's used
like seasonal affective disorder, but I have found articles that talk specifically about how winter can trigger seasonal anxiety.
I hope that's what both of us have because that would mean it will be over come spring!!