Hello and thank you for your question. I’d be happy to assist you.
I understand your concern.
Well as you describe,possible causes of such lump feeling in throat may include Laryngopharyngeal acid reflux,Globus pharyngeus due to stress,cricopharyngeal muscle spasms,Post nasal drip(excessive mucus production in sinuses).
You should try some self care measures like
Hydrate yourself with warm liquids.
Also do deep breathing exercises.
Take OTC Liquid Gaviscon and Prilosec.
Do saline gargles.
Take OTC Claritin if you have phlegm at back of throat.
Also avoid alcohol,spicy food,fried food,carbonated beverages.
You can eat a bland diet.
If your symptoms 'll get worse over the time then chest pain then visit ER ASAP.
Otherwise you'll be fine in next few days.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
Waiting for your response.
It’s my pleasure to continue this conversation until you satisfy.