Thanks for query,
Your postponement of menstruation
cycle is due to hormonal
This occurs due to tension ,anxiety
,Late working hours,Shift duty,Any ovarian disease
The level of it in blood is necessary for ovulation & preparation of endometrium.Your endometrium thickness suggest that it is not prepared normally.
Your ovary shows normal size & you have normal uterus.
Once your hormonal cycle establish you will get ovulation & there are chances of being pregnant.