Being sick knocks me around physically and mentally, madgirl.
Feeling bad always made me want to drink and it stayed that way for a little while after I quit.
Feeling cravings is not a sign of failure - it's what we do in response to the cravings that's shows the quality of our recovery I think.
Sounds like you might be a little out of balance too - can you delegate some of your duties or at least make an effort to enjoy some down time?
D