The first node behind and below the ear has gone away, so no problem there. The two nodes below hair line would seem to indicate an on going infection in the scalp, eczema or scalp skin problem. Can't really b sure 100% that they are lymph node, but cannot think of any other likely problem. I think a "wait and see"policy would be indicated. if they disappear as number one did, then fine, but if they get bigger then tests will be necessary. My bet is that there is nothing to worry about.