Oh, oh. Yes, the nipple pain sounds like thrush (presuming that it didn't used to hurt) -- and if you recently had a yeast diaper rash that is almost certainly it. I can't say I've ever felt ill from our yeast infections, though I did have a vag yeast infection along with a case of thrush once, and I know that some people find those make them feel bad. I do agree with the PP that your other systemic symptoms sound like mastitis -- keep an eye out for a fever. I have heard that some doctors question whether thrush symptoms are actually yeast or another sort of staph infection, so perhaps that would have other symptoms (I've never had the privilege of anything but thrush, thrush, and more thrush -- just finished case no. 6). After trying every treatment, we have found Diflucan the only thing that makes a difference for us, but you'll have to get your doctor on board with the diagnosis for that. Unfortunately many doctors don't acknowledge thrush unless the child is demonstrating oral symptoms. One doctor told me that my breast pains were normal! So be prepared to be assertive -- you might even print out the description on Kelly Mom and take it with you to your appt. Meanwhile, you might get started by applying Lotrimin to your nipples in between feedings.
My advice is to follow preventitive measures to a T, and continue to do so for a month or so after your symptoms are gone -- washing bras after each use, not reusing towels on your or baby, washing on high heat to kill the yeast, washing your hands incessantly (esp after diaper changes!!! and baby's hands, too, if s/he's touching the diaper or diaper area), sterilizing pump, bottles, pacifiers, etc. Don't serve milk pumped during thrush at a later date -- it will recontaminate you, trust me. My LC advised me to avoid bar soap, and that might be helping us actually. Also, I guess a weak vinegar rinse can kill yeast on anything, which is good for toys, washing bras, etc.
Do others have helpful advice? Because I'm always looking to further de-yeastify our lives!
Hope you feel better soon!
Mother to a sweet boy, born at 34 weeks on 2/11/11.
Proud that I grew 26 lbs of baby before solids, and still counting...
We received banked milk in the NICU. Thank you, donors!!!