Sense of something buried under the skin

4 days back I sensed a lump on the right side of the neck. Not visible to the eye but I could feel it when pressing the fingers a bit deep. It was initially painful when I clasped it today it is not. I am not able to sense any increase in size. No issues with throat or difficulty while swallowing food, no cold/running nose nor sore throat. I am on a course of Cepodem 200 n Enzoflam. When should I expect the swelling to subside? Its bothering me mentally. Today I found one more lump around the front base of the neck where the shoulders form a cavity. This lump is not visible to the eye too only felt with finger tips . Unlike the first this one isn't painful when agitated/pressed. Should I be worried?