I have a sinus infection, swollen lymph node on right side of my neck that is a little sore but I don't have a sore throat and my gums are swollen?

Oral infection. It sounds like you may have an early but possibly serious oral or dental infection. See a dentist or ENT specialist as soon as possible.
Upper teeth. Not sure of your question, but if your upper gums are swollen, it could be a tooth masquerading as sinus or even a tooth abscess infecting your sinus. You need professional care.

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I've had a swollen lymph node on one side of my neck for months, and now I have a sore throat only on that same side. What is going on?

Need to be checked. Although this is usually nothing to worry about, it could be an infection your doctor can treat. However, there's really no way to be 100% sure without someone performing a good exam. Don't spend any more time wondering on this. Please get it checked. Read more...

Sore throat swollen lymph node same side of neck. What should I do?

Monitoring Centers. Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well. Read more...