I went to the emergency room 5 days ago. It was the middle of my conception week but I had not yet ovulate. I went in for kidney stones. I knew what it was but procedure causes an MRI, cat scan or trays to be done. I wouldn t let anyone do anything because I was in my fertile week and had tried 2 days prior the ran a pregnancy test it came back negative, so I allowed the cat scan. After doing so I began to really analyze the situation, if I was still in my fertile window but had not yet ovulate would it of shown up on blood work pregnancy test. I did try again 2 days later on my actual ovulation date and am now also wondering what the chances of birth defects if I am pregnant?