It's possible you're still in shock. Perhaps others have told you that the first occasions of note since your loss will bring it up strongly: the first holiday, the first new year, the first spring, the first birthday...all the things you unthinkingly counted on spending with your loved one.

I have never found grief to be a path. It's more like unpredictable waves, like when a boat goes by on the river. Suddenly my calm is disturbed by grief, and it may take a few waves to settle into the new state of calm.