Does taking hrt's after hysterectomy always increases your chances for breast cancer and how long do u have be on them before that happens.

Not always but often: Hrt does increase the chances of breast cancer . No current consensus among medical community on who can safely take hrt and for how long with those chances that are inconsiderable comparing with benefits of hrt. If however you have a family history of breast cancer, or had it before yourself, or you are white or hispanic with low bmi , taking hrt may be a bad idea. See medical oncologist to disc.