If I am pregnant, I would be nearly 5 weeks. My timeline so far goes like this:

March 22-26 Normal, moderately heavy period

April 1 Unprotected sex

April 14 Unprotected sex

April 14-19 Spotting pink/red and brown, barely enough to fill a single pad over 5 days

April 20-25 ACTUAL period was due, but has not shown up as of yet.

Since about April 4/5, I've been having very light pelvic cramps off and on all day every day, nausea, diarrhea, no appetite, and the other day while making a sandwich I had a sudden urge to vomit and became super hot and dizzy for no reason. I had to lie down for several minutes. Also, NEVER in my life until I was pregnant with my first child did I ever have or experience any form of heartburn...and haven't felt it again in 2 years...but now I am having very mild, barely noticeable heartburn when lying down, but still there. My last pregnancy test was taken this past Sunday morning (dollar tree cheapie), but it was negative. I may have ovulated later than I thought, but regardless I have these symptoms and my period is still late! Has anyone experienced anything like this before??