Two Eggs...Negative Test

Hello All! I have been on Femar for two cycle months. My last cycle month I had two eggs released via HCG shot. I waited the two weeks and took my test. The pregnancy test was negative. This was on May 5. My question is there still a posibilty that I may be pregnant? How does that work with two eggs? Is there a possibility thta one could have been fertilized late and that is why I had a negative test? I know I should take another test but I am a bit nervous. It took us 5 yrs and two rounds on Clomid to get pregnant with DS. He is 18 months old and we are ready for baby # 2! Does anyone have any advice for me? Thank you for reading!!!