Did you have fresh tomatoes over the winter? I had a tomato plant also this past winter. No tomatoes this winter for me.:(
The tomato plant will not produce any fruit without pollination .
If you see flowering blooms , you might have to hand pollinate with a small delicate painters brush when there are no bees or flies arround.
If no blooms , the problem could be inadequate soil fertilization/ nutrients , or inadequate sunlight.
Not this year. The last 3 years I did, but not this year. However I do have some cherry tomatoes that have started to turn - they are orange, so they should be ripe soon. This tomato was grown totally indoors from seed.