I keep thinking that I may be pregnant & then I start cramping so I think I'm not. My husband and I are not TTC, but the last 2 weeks my breasts have been extremely sore. I took a pregnancy test last week, and one today and they were both negative as far as I could tell. This morning I felt as though I was going to faint and I thought that might be a symptom. I just don't know. My body is going crazy and if I'm not pregnant I don't know what's wrong with me. I don't have regular periods so it's hard for me to gauge when I should trust a test. It's been 30 days since The first day of my last period. 

Any advice?