Both acid reflux/GERD and sore throat/feeling like there's something in the throat choking one, can be caused by thyroid inflammation. As already suggested, it's a good idea to see your doctor and ask for some tests to be done.
Dysphagia is a common issue with gerd. What are you doing to treat that?
You say your throat aches. Acid reflux can get up in there, but it wouldn't make it hard to swallow or cause a sore throat, it would feel like something unpleasant got in there for a moment. Are you going to bed or lying down soon after eating? If so, that could be the cause of the increased reflux. But if you have a sore throat that aches badly for a week, have you looked at it? Is it red? Are you feeling sick, fatigued? Because a sore throat can be a lot of things. It could be spring allergies. But it could also be strep throat or tonsillitis, both of which I've had. But with both you would not only have a sore throat, you would also feel sick. I know this isn't a great time to be seeing a doctor, but I'd have to say, if you've had that bad of a sore throat for that long I'd want to see one to get a throat culture taken.
Saline gargle at least thrice a day especially before going to bed. Use semi hot water with a couple of teaspoons of table salt.