I just thought you might be interested to know that you have glands in that area behind your ears. I would say that they could be probably just swollen glands, or possibly just enlarged. I noticed that mine have been enlarged ever since I had mono back in high school (about 6 yrs ago). I would definitely get them checked out to be sure, but I wanted to offer you another "possibility" so you didn't get to worried about something that may be nothing. Hope everything goes well!