my 1 and a half month old has thrush and her voice is really raspy

My daughter had thrush but she was brand new.. her cry did change,  although i don't remember a "raspiness'' . They have this thing called gentian violet and it was said to work really well. my daughter got a yeast infection diaper rash because the thrush had went into her digestive tract. look into your daughter's throat if possible. a raised red bumpy rash in her throat may indicate a viral infection which can indicate that the raspy-ness is just a coincidence.  Either way i would take her to the doctor just in case. you don't want to write-off any possible symptom of pneumonia ,especially since it is a dangerous age for the season.