Looking at The Tower as the first card, we can tell that you are aware that your health condition is not in good condition. The Tower represents a change, a moment of transformation and personal growth. So your concerns about your health may be related to the fact that you know you have to do something about yourself to improve it.
The Six of Pentacles reversed speaks of the difficulty in recognizing one's feelings and needs and taking care of them. The reverse also indicates that you may have trouble approaching your health concerns realistically and constructively. You may feel lost or helpless in dealing with the situation you are in, not knowing how to proceed or how to overcome the problems you have.
Reversed Wheel of Fortune suggests that you may be stuck and unable to see a way out of your current predicament. The reverse also indicates that you may not be ready to face your health problems and take action to fix them. You may also be unsure about the choices you can make to improve your health, and thus avoid doing something about the situation.
In conclusion, looking at the three cards together, it seems that you are aware of your health situation but feel blocked and unable to take steps to improve it. The solution is to take care of your health: find out about the disease, talk to a doctor or therapist, talk to loved ones or people who have faced similar situations, seek psychological or emotional support, study strategies to manage stress, seek help online or in relevant social environments etc. Doing all of this can increase your chances of recovering from an environment-related autoimmune disease.