Hi,
I am afraid I won't give a reading about anything health related as that is best left to the medical professionals but I have asked my cards if there is a message for you and this is what I got.
You are The Sun,
This card shows us a briliant sun, filling the sky with its light and love and making everything grow. This ties in immediately to what you have said about being the eldest and people looking to you to wave your magic wand and make things better. The thing about The Sun is that it works during the day and at night it rests and the Moon takes over. But as we all know The Sun doesn't really get any rest but is continually rising somewhere and setting somewhere and bathing a part of the world with its live giving energy, warmth and light. This is indicating that perhaps this is how you are feeling and that you can see no respite in sight. Rest assured that like The Sun you do have the strength and energy to carry on shining but that you also need a support system like the Moon, Someone that you can confide in and share your feelings and thoughts with and someoner that you respect and trust. Allow yourself to take things easy at some times so that the strain is varied and you can recharge your own batteries.
Many blessings to you