Do any of you use bifocals successfully?

I just got my first pair today. I thought I was having a great day with no symptoms, and when I first put on the glasses they seemed just fine. I drove home enjoying the clarity of my new prescription. By the time I got home, my eyes were getting a little achy. Soon thereafter, I noticed it was extremely difficult and ultimately impossible to hold an upward gaze above the bifocal line.

Have any of you experienced this problem too? If so, is there a solution (besides wearing them on the tip of my nose like a granny) or will I have to buy single vision lenses and carry separate reading glasses? (I do not have any muscle-related DV to complicate the issue)

Tatia