puffy and white spots?

alright. so i went to the pet store… and i feel kinda ignorant. and dumb. cause i dont think i thought too well on this. or sumthing. i dunno. i’m so confused. like i said in my other post on TT turtle forums.. i got the female.. or atleast it looks like a female i’m sure.. but i dont think i was choosing very well.. i feel i was being selfish and jus wanted a campanion for buster and wasn’t thinking very smart when i got her.. but anyways. i have a few questions.. followed by a few.. okay maybe more than a few pics.. (7) are turtles supposed to puff up? i dont think this looks too normal.. there’s sum white spots underneath her but i wasn’t sure if that was jus cuz her shell or not.. i’m like.. going out of my mind thinking that i’m effing up sumhow… her shell is kinda chipped on the back a bit… but it seems as though as it’s healed up fairly well.. sorry .. no good photo of that part. she was moving too much.. the photos below are the best i could get so sorry if they’re blurry photos here — showtopic=32377 any help is greatly appreciated.. i feel so lost…and i’m sorry if i’m such a newb at this.. i should know better…