Depending on where the feeling of a lump is located, it could be your thyroid (about
the middle of the throat area) or it could be the glands that surround your throat (which are located at the top of the throat). I told my Acu doc that it felt like I had 1/2 a bubblegum ball stuck to the back side of my throat and she felt my throat in that area and handed me a tincture to take to help 'flush' my lymph glands.
I have also had pills, food, or whatever I'm trying to swallow get 'stuck' about
1/2 way down my throat, which turned out to be that my thyroid was quite swollen. I discovered I had Hashimoto's Thyroiditis and am now taking a Thyroid Supplement that has reduced the swelling.
I have also just had trouble swallowing a few times. My hubby had to do a Heimlich maneuver on me a couple of weeks ago!! GEEZZZZ!! Scared the beejeebers out of me!! - and him!! I had tried to swallow my night-time pills and he was already dozing. I shook him until he woke, then pointed - rather frantically - at my throat!!! He jumped up and did what needed to be done. We were both wide awake for another thirty minutes after that though!!!