Re: Nipples hurt soooo bad !! -- Update in OP
Extreme pain that radiates through the breast to by shoulder is usually the ONLY symptom that I have thrush (no white spots, no redness, nothing on baby) and the first few times it happened, I didn't recognize what it was and it progressed to mild mastitis which the only other symptoms were nausea and fatigue. Treating the thrush with Gentian Violet or Nystatin and mastitis with lots of rest and fluids have worked beautifully for me every time. My sister is a doc and she said that a medical professional who has never had thrush would not have recognized that I had it.
Just something to consider. It may not be hormonal at all--your symptoms sound EXACTLY like mine.