Sorry, I was wondering how you were doing...Yes, I verified with my own CAV that I was correct about the Neo Poly Dex, it's broad-spectrum for bacterian AND it treats the most common fungal infections that occur, including yeast.
I totally agree about holding off on giving the Doxy until you get the lab results back, because Doxycycline is a very strong and GI-irritating antibiotic, and unless you're certain it's Psittacosis, or unless you're absolutely certain he actually has a bacterial infection at all, then you should not give him ANY antibiotic...That's exactly what I was trying to tell you before, these Vets that just prescribe antibiotics without knowing if they are needed or if they are the correct ones are playing with fire with birds...If your bird has a GI Fungal Infection and you give him any antibiotic, it can and probably will make the fungal infection much, much worse...So I'd hold-off on giving the Doxy until you get ALL of the lab results back, and then go from there...But I'm glad you have it on-hand, as it's likely he does have Psittacosis based on his symptoms...
I'm glad the conjunctivitis is getting better, the Neo Poly Dex is great stuff. Keep in-mind that if he does test positive for Psittacosis, the conjunctivitis will likely come back until he finishes the long course of Doxycycline, as the conjunctivitis is being caused by the bacteria causing the Psittacosis, and the Neo Poly Dex will treat it/cure it "locally", meaning directly in his eyes, but systemically the Psittacosis will keep causing relapse until he finishes the entire 21 or better the 45-day course of Doxy, because Psittacosis is sooooo good at hiding and hanging-around and then coming back with a fury after you think the bird is perfectly fine...
****What Probiotic exactly did you get? Do not EVER, EVER, EVER put ANY medications, vitamin, supplement, etc., not anything in your bird's drinking water!!!!
It contaminates the water as soon as you put it in it, bacteria and fungi both start growing in the water and on the dish, and this could actually be detrimental to your bird...Plus, you have no idea how much your bird is actually ingesting, as they don't drink much water at all throughout the day, so it's usually worthless anyway, but the danger it causes with the water is reason enough to not EVER add anything to it...And if a Vet ever tells you to give your bird a medication or anything else in his drinking water,
get a new Vet!!!
I give my birds a daily Probiotic supplement that is a powder that comes in a bottle with a pre-measured scoop, and I simply sprinkle the pre-measured dose all over their pellets and/or seed-mix, and they're good to go. The nice thing about Probiotics is that they are't something that the dosing has to be exact on at all, same as giving him the yogurt, that's a great way to give him Probiotics (as long as it's a non-dairy yogurt, like soy yogurt, because lactose makes them sick)...The Probiotic powder is going to be much more potent than the yogurt though, so it's fine if you simply sprinkle it right onto/into her daily seed-mix when you give it to her first thing in the morning, every morning. She will ingest enough of the Probiotic powder by simply shelling all of her seeds in her mouth...That's what I would have told you to do if you had gotten a bottle of Acidophilus tablets or any other Probiotic tablet, just grind a tablet into a powder once a day and then sprinkle the powder throughout her seed-mix or pellets, whatever it is that she eats, so that the entire bowl of seed-mix or pellets gets a coating of the powder...It's actually easier if you feed a seed-mix, because you can easily coat all the seeds in the bowl by mixing it up well, and then she'll basically get a small bit of Probiotic with ever seed she shells. And the powder sticks well to the outer seed shells...So just sprinkle the recommended dose over her seed-mix, mix it up well so all the seeds are covered in the dish, and then you're good to go. Do this once a day in the morning when you give her fresh seeds/pellets. And keep her on the Probiotic throughout the entire time she's on the Doxy (if the labs come back that way), and for at least a week after she finishes the antibiotics, to keep her Gut full of normal, healthy bacteria to fight-off the yeast/fungi that loves to grow there...
*****Let us know the lab results as you get them back, and use that information to determine whether the Doxy is going to be required. I have a good feeling it will be, but you always want to be sure before giving your bird any medication. And keep up the Neo Poly Dex once a day, until either the conjunctivitis is totally gone, or until the Doxycycline is finished, depending on how the labs go...
Can you please tell how's this pro-biotic? 
