Can douching delay your period

Answer 1

No, douching doesn't effect your period at all - when your period is due is determined by your menstrual cycles, nothing about douching could effect this.

FYI douching is unhygenic and unsafe as it effects vaginal pH, strips vaginal tissues or moisture, and can force harmful bacteria further into the vagina - douching increases risks of vaginal infections, TSS, STD's and PID.