my axolotl has thrown up stone

[laken16]

Hi, she's Yurana.
I have her for 4 weeks, and my tank doesn't have anything else than sand, i guess the stone was in her stomatch or bowel for whole time, she must have ate it on petshop tank.
but actually she still has a ridge, which stays on up but sometimes it stays on down of her chest, which has hard tissue.
i believe there is another stone around there
is there anything i can help with her rather than just waiting to throw up?
thanks.

 

[fishkid]

an exotic vet is your best option right now. This axolotl also looks incredibly unhealthy and is in major need of some TLC, don't purchase from that pet store again, it is clear they are not properly caring for their animals.