Is my tomato plant ill?

[RhianB]

First of all, this is my first post, so Hi everybody & nice to meet ya I am a tomato growing noob - this is my first attempt. I read the informational threads regarding tomato illness/behavior but want your experienced opinions. The leaves have brown spot, the lower old leaves have developed purple veins & the plant in general looks kinda droopy. The variety was "celebrity". None the less it is still producing fruit. So far, my research has shown that purple veins/leaves point to a phosphorous deficiency. As far as the spots ... jeez every tomato illness out there produces brown spots it seems hah. My cherry tomato plants seem to be immune, are producing going on their merry way. Anyhow, below are 2 pics, one of the spot & the other of the purple veins.







If they are sick, any advice/help would be much appreciated.

Thanks