Seen by nurse not by doctor

Hi ladies , i am 28 weeks Pregnant and been to the hospital only 5 times till now ( bcoz am having low risk) . I was seen by a doctor only very first time . And afterwards all my visits were clinic appointments , (expect from my 20 weeks ultrasound) I was seen by a nurse . Now i have my next appointment in couple of days and dont know by whom i am going to be seen. I have many questions and things to discuss about my Labour and delivery. What should i do ? Is that's how it works? Or i should ask for doctor? Thanks in advance for your reply.