HEEEEEEELP

Diana

My last period was April 20 to 25 and I had intercourse on April 30 and May 6 (3 times). I am 20 days late and my urine and blood tests are negative. Do you think I am pregnant? the doc told me that they might be twins so the negative in the tests therefore told me that I should have a quantitative test! Has anyone been through this and if you are pregnant?