Pregnancy confirmation query - b hcg tes

I want to consult about confirmation of pregnancy. I am taking diane 35 from last 9 month and have stopped taking it in last two months as suggested by my doctor. I have pcod on both ovaries and taking metformin and apcod sachet for it. Along with it i am taking thyronorm 25 mcg as i had thyriod problem from last 5 years. So i was taking routine medicine. I was not getting periods and while intercourse i have used medicine called today prescribed by doctor. After that i didnt got my period. So i took meparate for 5 days and waited for 7 days to get periods but still not get it. Even i tested for home pregnancy test and still got negative. So i got my beta hcg tested and got it < 1.2 mIU/ml. Is it ecoptic pregnancy or no pregnancy or something else. As my doctor said using medicine named today will not interfere with my periods and i am not getting my periods.