FET TRANSFER CONCERNS

Hey lady's i'm about to have transfer in a few days on the 25th and today is cycle day24 but I stopped birthcontrol on the 7th of this month my questions is did my cycle day change to the 1st day of birth control which was oct 1 or is it still the 1st day of my period which was sep29? Also did you feel like you period was about to come on and a few days before transfer, there isn't any bleeding it just feels like my period is coming my back hurts and slight discomfort in my lower stomach I'm currently take 2estrogen patches every other day and progesterone oil 10mg injections everyday?