Oh lowery - how horrible not knowing!!! Definitely go with your gut instinct, I am happy you called your doctor again. I can relate, I am now 4 days late, and I took a test 2 days ago but it was BFN. So like I said, i've just pushed it in the back of my mind now, and just waiting to see. Then last night I woke up with crazy heartburn, which I never get! I also feel like my boobs have grown which is a strange feeling.
But eh- I will test again on Saturday which would be 6 days past.. just to see. But other than that, I am not going to stress about it anymore