I got my period 3 days early. I got it February. 28th instead of March 3rd, and it was light pink spotting then changed to light brown spotting. I've taken several test since then. Now I'm unsure wether or not I'll get my next period on the 28th (in a few days) or on April 3rd. I had ridiculously painful breasts around the spotting time that has disappeared since then. I also had some occasions where I threw up In my mouth. All the tests are negative despite what happened. Could I be pregnant? Has anyone had this happen??