I can only imagine how difficult it must be caring for both of your parents and also trying to care for your own health. Are your parents eligible for any type of medicare benefits that might help to pay for home health care nursing? As Marla mentioned, perhaps you can look into their insurance to see what is covered. You need as much help as you can get and it might be beneficial to all of you to see if your parents are eligible for some type of care.
Please do not push yourself to the point where you put your own health at risk. Remember that we are here for you whenever you need us, but do take care of yourself...please.
Peace and Blessings
Look For The Good and Praise It!