WHYYYY?!?!

My 14 month old is teething atm. She has been fussing all night. Nothing helps. She looks at my breast but cries when she tries to latch and touches her gum on one side. So i thought it was because of her gums but I hand expressed some milk, she doesnt want it in a bottle nor did she like it when I spoonfed it to her. I am expecting my second pp period these days, could it be that my bm tastes different?