My last period was September 10. It has been 28 days. My period usually comes between 21 and 23 days. My boyfriend of 5 years and I had intercourse a couple of times after my last period. The past 3 days I have been peeing a lot more than usual, I have felt dizzy, lightheaded during work,a bit nauseous (not like I would throw up, but uneasy in my stomache), very sleepy in the afternoon, hungry shortly after every meal, and no period cramps so far, which is usually a tell tale sign that my period is literally about to start. I think I might be pregnant but think it may be too early to tell although all of my symptoms seem relevant?... Any advice?