okay, so i've successfully breastfed for 5 months now. its been pretty patternistic...let-downs when she feeds, engourgement in the morning, and a full, sometimes spraying, supply. since about a week ago, i've noticed that my breasts are much softer and now i'm not feeling that 'tingling' sensation when she feeds. i've tried expressing and i cannot get any out. Shelby acts like sometimes she gets full but a couple of times now, shortly after latching on, pulls away and looks at me like she's not getting any. am i just paranoid or is my worst nightmare coming true? HELP!