What Does A Lump Below The Tongue Indicate?

I have had a cold for a very long time. 2.5 weeks in February and since March 11 onwards. My nose is now fine and my lungs are clear. But I have had a dry raspy throats ever since. It sometimes feels like I have asthma. Massage and chiropractic adjustments help relieve the feeling of tightness and I do not need to dry cough as much. I have been to my family doctor many times and to an ENT specialist twice. I notice that on my left side just below the tongue a pea size white node that is not always apparent but there none the less - is that an infection - just want to return to normal- while I m am slowly getting there as a 60 year old my recovery is slow and disappointing. So there you have it is that pea sized node something to be looked at?