My husband & I just started ttc this month. I ovulated on 8/31. We had sex on the first & second & again on the fourteenth (the was a little blood afterwards). My period was supposed to start on fourteenth but it didn't. I'm now 6 days late and I'm never late, my periods are like clockwork. I've been bloated, and a little crampy. I've taken 2 pregnancy tests & they have come back negative, I'm getting a blood test tomorrow but I wanted to know if anyone else had experienced this.