What are you using to sterilize your bottles with? There is a possibilty it could be related to that.
I know of two Mums who have used a liquid one whose babies had thrush. One of the Mums noticed just as the baby got 2 spots in his mouth and swapped to the dissolvable “tablets” which dissolve in water. The other Mum didn’t notice it (another relative noticed it while holding the baby). That one got it on her bottom too. They also discovered that she got thrush if she was treated with medicine containing sulpha at all.

Great info from Rach1292 – very handy to know

That’s no good I won’t know y sorrt

has she been taking anti biotics?

How is diet like? if it is too much in sugar you need to cut down for her.

I hope it’s gotten better since you asked this.

I’d see a doctor about it, maybe it needs something stronger to knock it out for good.

See your doctor about it

Oh that’s not good. Would be painful

Is there anything I can do to prevent my baby from getting thrush?
Not if, like many babies, she got the infection from you in the first place. She may have picked up thrush from you as she passed through the birth canal during labour. Or she may have developed it afterwards during breastfeeding.

However, some babies are simply more prone than others to the fungus. Here are a few things you can do which may help to prevent it: Give your baby sterilised water to drink after breastfeeding or bottle feeding to rinse the milk residue away.
Clean and sterilise dummies, bottles and feeding equipment, and other toys she might put in her mouth, such as teething rings.
Wash your baby’s clothes at 60 degrees C to kill the fungus.
If you’re breastfeeding, wash your nipples with water and dry them thoroughly between feeds

How can I treat thrush?
See your doctor if you suspect your baby has thrush. She may prescribe an oral antifungal treatment, usually miconazole gel or nystatin suspension. Micozanole is thought to be more effective than nystatin.

Use a clean finger to apply a little of the gel to the infected areas in your baby’s mouth. You may also need to put some on her bottom if thrush has spread. Always wash your hands each time you’ve finished treating your baby, to stop thrush from spreading. It may take a week of treatment to clear up the infection.

If you’re breastfeeding you will need to be treated with an antifungal treatment at the same time, even if you don’t have any symptoms. This will prevent you from passing the infection back to your baby when you breastfeed her.

Get something from the chemist and talk to your dr about it

my new born had it and I went to the chemist and got nilstat. was the best thing ever.

Are you breastfeeding this could be why ?

Hmm it could be transferred from the tooth brush and or dummy. I’d seek help from your GP if your little one continues to get it