Abortion

I’m 20 years old in the military. I’ve had missing period for 36 days now, I always had irregular periods and i been missing it for months sometimes. But for some reason I felt my body been changing. I took a pregnancy test and it shows im pregnant. For personal reasons, I cannot keep the pregnancy. No family members knows about it except a close friend. However I don’t know how accurate this test is but I scheduled an appointment with my doctor for next week to discuss and have myself checked.

In case of getting an abortion, how extreme and dangerous it is to the body? And can the pregnancy test be wrong sometimes?