I can feel my lymph nodes....?

About a year and a half ago I was at a horse show and my horse took a jump very weird and it made my body do something weird in the air. My neck started feel super stiff all the time after that and I was always rubbing it. I felt two little lumps in my neck which I knew was lymph nodes(they could have been there before this I would not have noticed). I went to the doctor who said she could not even feel them but I could feel them easily so could not understand why she could not. Just to make me feel better she sent me for a CAT scan which came back that my lymph nodes were a little enlarged but still within normal size. About 6 months later I had blood work done for a different surgery and the doctore orded every type of blood work you can have done, everything came back normal. The lymph nodes are less then 1cm and are very soft and I can only feel them if I press into my neck a little. They do puff up a little if I play with them but always go back down. They have been there for at the least over a year and a half and they have not changed at all. From what the doctors have said and what I have researched I should not be worried but it is still in the back of my mind sometimes. Should I be worried? Does anyone else have lymph nodes they can feel?