My husband & I are TTC. My last period was August 8, but I also have irregular periods. I'm estimating my fertile period was between Aug. 22nd-27th. My nipples are sore, I have been tired all day long .. but that symptom went away. I felt weird sensations in my lower abdomen .. like where my ovaries are, & I have headaches off & on, & sometimes feel dizzy. I have taken two first response gold [digital] test & both have came back negative. I used first morning urine on the second test. I don't know what to think. Am I pregnant ?