sorry to hear that you have so much going on at one time. i am taking chemo right now and have not experienced anything other than a upper respitory infection a couple of times but they give me levequin(anitibiotic) and then it seems to go away. but i have heard of others with more serious infections that require a hospital stay.
i try to eat right and take vitamin supplements to boost my immune systems as much as possible. i was able to avoid so far one-case of whooping cough,2-cases of pnuemonia and chicken poxs this winter so it must be working. but i think we just cant avoid everything or everyone that mwy have something.
i wish the best of luck to and your mom. i hope you heal soon so you can get back to helping her. but make sure you take a good amount of time for yourself to heal.