She rolled onto her side, body aching from exertion.
For a moment she felt the dull aching pain of being utterly alone.
A warm shower soothed aching muscles.
Her body's aching response to his direct stare and nearness took her by surprise, and she inched back.
An attack may come on suddenly, but, in general, begins by a dull aching pain in the brow or temple, which steadily increases in severity and extent, but remains usually limited to one side of the head.