I hope someone here can offer some insight because I think this is just plain weird.

I have two lumps on the back of my head. That part doesn't worry me so much because they are about the same size and are at the same place (one on the left and one on the right). They have probably always been there, just never really noticable. Well, for about a week now the one of the left side gets really sore after I sleep (I do sleep on that side) or even just lie on the bed for a few minutes. The soreness goes away after about an hour or two. That part does concern me as I can't figure out why. If I lie on the right side it doesn't get sore.

Does anyone have any ideas of what this could be before I call the doctor? I hate to waste his time and mine if I don't have to.

Thanks!

Nancy