Hi Doctor. I Have Pcos And Was Using Metmorphin To

hi doctor.
I have pcos and was using metmorphin to regulate my periods ,My period were normal i stopped medicine and now i was 4 months late on period i did pregnancy it was all negative.last pregnancy test idid 2 days before it was also negative,.Now today my doctor prescribed me dydrogesteronum to induce my period again and put my on metmorphin again .i had only one tablet of dydrogesteronum today and got light spots.is it ok