Should I go to OB?

Hi, malalaman ko ba yung exact kung ilang weeks na kong preggy pag nag pa ultrasound ako? I mean I really don't have an idea what to do. November pa kasi yung last period ko but di ko matandaan kung ano yung exact date and pregnancy test palang yung nagawa ko so far. tyia #firstbaby #pregnancy #1stimemom #advicepls