I have a sore throat for couple weeks now. it feels like something hanging from inside esophagus like a skin tag, i feel like to swallow it. advice pl?

Dysphagia any cause: Distinguish "transfer dysphagia" (problem moving food from mouth to top of esophagus) vs. "transit dysphagia" (problem getting food down esophagus & into stomach). Motility disorders, strictures, ulceration (pill-associated, viral, or more typically gerd), tumors (benign or not) must all be ruled out. Endoscopy offers the advantage over x-rays by permitting biopsy & removal of lesions, dilation.

Advice:: See your own primary care physician for an exam. A sore throat, not associated with a cold and lasting more than a few days warrants a medical consultation.