[Harmony♥]

Anything could be going on with your period. As much as we'd like to think our periods are always on our side, that's another matter. Anything from stress, changing your diet or changing your exercise routine could cause your periods to come early, late or not at all.

Because the tests came back negative, I don't think you have anything to worry about in terms of pregnancy. However, if you'd like taking another test to ease your mind, maybe it would be a good idea. To have TWO negative pregnancy tests is almost unheard of. If the next test comes back negative, I'd make an appointment with your doctor to see what's going on.