Could this be it...

Ever since Friday I've had this feeling that it happened... I've had symptoms of nausea, sore nipples, lower backaches, increased sexual arousal, headaches, pelvic pain (not like I'm starting my period), frequent urination and last night all night I dream about being pregnant... I've taken three tests, all negative but AF shouldn't be here until tomorrow or Wednesday... Out of the last 6 months I've spent paying close attention to my body and it's symptoms, it's never been like this... Could this really be it...