My period is over 2 weeks late, but two pregnancy tests came back negative. I have never skipped a period. I am not experiencing high stress, excessive weight gain or loss, and have no unpleasant symptoms at all. Before my period, my pms symptoms are pretty bad, but so far I feel nothing. Should I be concerned about a serious health issue? I am 33 years old, and healthy. I am planning to see my doctor once I am back in town, but am going a little crazy in the meantime.