stellaruth, where do you have your tomatoes growing? Are they outdoors or in a tunnel or greenhouse? Ripening tomatoes outdoors is always touch and go, and I wouldn't think they will ripen now as the weather is definitely a bit autumnal - in Scotland anyway.
If they are under cover, I would think that they haven't ripened yet because they don't have quite enough heat and sunshine. My cherry tomatoes in a tunnel started ripening a couple of weeks ago, but there are still hundreds more to ripen, so

the frost stays away. If yours are a large fruited variety then they will take even longer to start ripening than my cherries.
You can try tricks like putting some very ripe bananas amongst the plants, also once the first tomato ripens, don't eat it but leave it there to produce its ethylene gas which will encourage the others to ripen.