Hello. Welcome to HCM.
With 2 months amenorrhoea and negative urine pregnancy
test, the chances of pregnancy are nil.
Your have not mentioned if any ovarian cyst
is detected in your USG. Sometimes, they will be important causes of amenorrhoea. Depending on age it can even be a symptom of menopause
If, you are not perimenopausal, best approach will be to have cyclical hormonal
therapy, as suggested by your gynaecologist
Hope this helps.