Talk to Gynecologist on Late Menses

Assalam u alaikum, My age is 25 mera 2 years ka baby hai baby k honey k baad se merey menses boht late aaney lagey hai 15 days or 20 days late hojatey hai or bech mai ek month to skip bhi huey merey kamar mai bhi dard rehta hai aksar or mjhey white discharge bhi hota hai dr ne mjhey dawaye di thi jo maine khaye to menses srf 1 din k huey us k baad progyluton ka course kiya hai 21 din mene ultrasound karwaya wo normal hai kindly dr mjhey bataye phr kya wajah hai jo merey menses har month late atey hai Thankyou