DVT does not produce such localised pain. As an example, sometimes the only symptoms from DVT is pain, but then I would think the pain should affect larger area, e.g. as the whole of the calf. Also, DVT pain is mostly felt after standing and decreases when raising the leg. Could you describe in more detail where this sore spot is. perhaps it can provide some clues.

I have no idea what is causing this sore spot. Could it not be some localised inflammation due to injury? some localised sprain? I would perhaps wait for few days and see how it progresses. I understand your anxiety. Patients with or have had DVT will often try to relate all symptoms they get with possible DVT. This is understandable as DVT can be difficult to diagnose. It is thus important to check out all unusual symptoms. In your case, I would think that your GP is correct and the best strategy is not to worry to much about this sore spot.

If you had DVT without symptoms, then this is a DVT that you would not have to worry about. Most DVTs have no symptoms at all, i.e. there is some clotting taking place, but it resolves on its own in few days without you never know about it. If you would select 1000 people at random and send everyone in ultrasound, then you would find out that some of these have clots, but do not produce any DVT symptoms at all. The occurrence of DVT with actual symptoms is much much rarer. I cannot remember any percentages now, but this information can be dug up. Naturally, non-symptotatic DVT can turn into DVT with symptoms, but then again, and most likely, it will not. So it is questionable to undergo D-dimers and ultrasound in absence of DVT symptoms. But naturally it can be done if you are worried...

There are classic signs of a DVT that you don't present, which your doc was looking for. Sometimes, there aren't classic symptoms but I'd be hard pressed to be concerned over that. I would just keep an eye on it and see if it gets worse or changes. Otherwise, if you're losing sleep over it, ask your doc for a D Dimer test. If your D Dimer is in normal range, that would rule out clotting activity. If your D Dimer is elevated, it could mean a possible clot but also could mean you have a virus or some other thing.

PS. Did you get your results of the ventilation and perfusion scan? If it still shows some old, not fully resolved clots in your lungs?