Talk to Gynecologist on Late Menses

Salam dr,my age is 25, mera 2 years ka ek baby hai but ab merey menses late atey hai boht gynaecologist ko dikhaya tha unhoney progyluton ka course karwaya 2 months. 2nd month jb course karahi thi tb menses time se pehley hogaye they is month medicine chor k dekha to phr 7 days uper hogaye pregnancy test bhi negative hai. kindly tell me k esa kyu horaha hai srf dawa js month khaye us ek month jaldi huey menses lekn wo bhi bleeding sahi nhi hui boht km hui srf ek din Thankyou so much.