Mom2Matt -OK honey -- I can tell you're stressed. Take a big deep breath and realize you are not the only around here that has experienced some serious bladder pain.
I have had interstitial cystitis (IC) for over 6 years -- at least diagnosed 6 years -- and it can be some of the most agnoizing pain -- I will certainly validate that for you.
Getting all stressed out about it will not help matters, however.
Please know that I am NOT a real doctor and therefore have no idea if what you are describing is caused by fungal issues or if you indeed may have IC, or some other condition.
I will say a yeast infection is really the more desirable of the two conditions...but IC is not a death sentence or anything -- and there is remission with it.
There is an OVC supplement called 'Prelief' that you can take before meals that will help to remove the acid from your food before it reaches your bladder. Even if you don't have IC, I can't imagine that it would hurt you - especially considering we lymies need to work on being more alkaline anyway.
Are you having to urinate frequently?
Does it hurt before, during, or after urination?
Do you feel like any of your pelvic muscle are in a spasm?
Do you have any burning sensations?
Does your bladder pain get worse around the time of your period or ovulation?
IC is often associated/connected to Lyme disease...so it is not out of the question for you to have it. My suggestion is for you to find a urologist asap - and I also suggest that you ask the urologist's office staff (over the phone) if the uro has EXPERIENCE in treating IC.
If you have a bladder disorder - you will want someone that has EXPERIENCE AND INTEREST in actually treating you, a complicated female in pain -- instead of a uro whose main concern is doling out the prescriptions of Viagra for those in need. (And no one jump my @$$ about saying that -- I understand that erectile dysfunction is a very real problem for some...but it does NOT compare at ALL to the real problem of IC - cause when you've got IC pain -- it doesn't matter how much Viagra you've got in the house --- sex ain't happening!!
You might also consider some of the OVC bladder analgesics (usually used during bladder infections -- ask your pharmacist) while you await a diagnosis.
And what helps me -- stay in bed as much as possible...with me - sometimes I swear I'm about to actually give birth to my bladder -- so I like to get horitzontal as soon as possible to take away the cruel effects of gravity.
I often just curl up in the fetal position - usually with a heating pad to my back (because of the spasms) and an ice pak between my legs...just don't let the ice pak melt & short-circuit the heating pad or anything. You don't need to electricute yourself at this point. 
Since this is probably TMI (too much info) for some of the fellas on this board, feel free to email and I'll be glad to help you trhough your bladder crisis to the best of my ability.
Also - you might go to the ic-network for help as well. They have a message board there & lots of good info. (Just be sure to watch your language there...I've gotten in plenty of trouble in the past because when I'm in pain....whew! I'll say anything...and I did.) 
My email: [email protected]
Blessings,
------------------
DR. Wiseass - not a real doc - just a real wise ass.
www.twistoflyme.blogspot.com