How To Get Regular Period?

I am trying to get pregnant and this is my 1st cycle of Clomid. My menstruation is not regular so my doctor gave me Duphaston for 5days...I was told that my mens would come w/in 3-5days after drinking the said meds. it is now the 6th day and I am just spotting and/or blood just goes out when I take a pee and there s not much of it.. I am taking Metformin for my PCOS. What can I do to have my period?.I really want to have a baby. I am 30y/o, 69kg , 163cm . Nes