Hi caj617
You've probably already seen this post, but if not, have a look at TmNMrPeanut's post titled "Hi i have a question about a small bump on the right side of my neck im realy freaked" - it sounds like what you're going through is quite similar.
I'm sure your blood results will be fine, try not to stress about it too much (easy for me to say, i know!)
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Don't believe everything you know