8 days late could I be pregnant ?

Patient: I’m 8 days late could I be pregnant my last period was December 20 2014 and I have a 30 day cycle

Symptoms: Back aches dizziness nausea

Doctor: HelloThanks for the queryIn case you have had a sexual intercourse during your ovulation days in the past cycle, and there is this delay in getting your menses and having nausea and back aches, there is a possibility of pregnancy. Do a urine pregnancy test to confirm the same and see a doctor for help accordinglyHope this helpedRegards