Hello Doctor. I Am 32 Years Old. I Have A

hello doctor. I am 32 years old. I have a son. now I am trying to conceive.IUI has been done 3times. at present I am having duphaston tablets (1+0+1).Does this tablet make my period delay? or if I stop taking this tab,will my period start? is it possible having period during taking this tablet? I am actually waiting for my pt. but also scared to have period.