she read it, she feel it

Last week my mom keeps telling me that her knees are always in pain even her arms. I told her that next time she go to her Dr. appointment she should tell everything what she feels. But sometimes It makes me think that papa is only imagining that she have arthritis. I should have not let her read the rheumatoid arthritis stories cause after she read that story she seems like feeling the same thing too. I mean maybe its only in her mind because every after her Doctors check up the Doctor always tell her that there is really nothing wrong and nothing to worry about her health, but sometimes she wont believe what the Doctors says.