I know this may be a little nasty. I believe my Rat Terrier Jax  may have worms in his poo, they are like little srtands of rice about two rice peices long and white. Are theese possibly worms and will he be okay to wait till our vet appointment on friday to bring this up or is it an urgant, possibly life threating condition i need to be seeking help imediately for. There's not but one or two every time he goes, hoewever I'm getting concerned!

Tapeworms...they come from ingesting fleas.  Your vet can give you something for them..

Here's a link with some info on worms: http://www.thepetcenter.com/exa/worms.html