Am I pregnant

Anna
So I am suppose to start AF Thursday 7/21. My husband and I had sex on the day I ovulated. And I'm have all of the pregnancy symptoms( sore boobs like really really sore, I'm nauseous, I feel like I'm starving all day every day and I pee every 30 mins feels like). I took two test the first one had a very very faint line and the second was negative. I had some extremely light spotting today and yesterday but it was brown. I have never had brown spotting before. Could I be pregnant? Any help would be greatly appreciated. Thanks