Pain On The Abdominal When On You Maestro Period I Have Abdominal Pain In Uterus Area When The Doctor Pressed On It?

I have abdominal pain in uterus area when the doctor pressed on it? - pain on the abdominal when on you maestro period

I have no sexually transmitted diseases or infections. So I need to get an ultra sound done. What kind of health problems it can cause pain when pressing on the area of the uterus. No trace of endometreosis.