Hey Blondi,
Id recommend juniper berry tea, if you have any Juniper bushes around your home you can collect them, clean them in some water/boil them in a small amount of water depending on how many you acquire. I use a small amount of water, let it cool in the fridge and add it to some juice.
Ive had several yeast infections and have done this, clears them right up.
If it is so bad that you need to see a doctor call the hospital and ask if there are any community clinics out there in your area that can see you, tell them you don't have money there are options out there for people without money, you just have to ask around.