Actually have been "prowling" around in the wee hours, not sleeping too well. Feeling "pressure /aching" in lower rear pelvis area. What I believe to be the screws used to secure new cup into place. Not a problem when up & about, enough to prevent deep sleep. Appointment at Mayo is not yet scheduled, but sent them a note Friday afternoon as employers HR Dept want info as my leave of absence expires the 26th. Am about a week and a half from 6 week milestone. Waiting for their reply.