Confused!!!! Cycle..

heena

Hi every one❤.. last month my period was due date is 29th feb but i have spotting on 24th feb i thought implantation bleeding i take test on 26th feb it was negative and again bleeding spoton 26th and 27th heavy flow 28th brown spotting 29th bleeding spot 1 or 2 march little spot ....soo which is my 1st day of cycle 24th feb or 27th feb?