Am I pregnant?

My husband and I had unprotected sex on the 4th. Two days later I took a ovulation test. I had a suspicion I was ovulating, and I got a positive lg surge. My period isn't due until Saturday (the 21st) I have a lot of odd symptoms I don't usually get before my period. My boobs have been aching for over a week now. I have creamy white CM currently and mild cramps in the middle of my abdomen. Every pregnancy test I've taken has been negative but I guess I'm wondering if it's not due for two days it could be too early to test. We aren't trying but we agreed whatever happens is meant to be.