HCG DIET

So, I am currently on the HCG diet, and have lost a total of 13pounds. Prior to this I was having my periods regularly off my birthcontrol. I have PCOS. And I have never gotten pregnant when off of my birthcontrol because of my PCOS. And I just didn't think I would get pregnant... Well after starting my diet. I thought it was late because of the HCG diet. And I took a pregnancy test. Thinking it would show up positive because of the HCG in my system, and the test came out positive. I went and took a blood test with my doctor, after explaining I'm on the HCG diet, because I wanted to be safe and positive I wasn't pregnant. Because of the diet it would be unhealthy to be pregnant and on the diet.