Interesting question. I recommend that you speak with your doctor
. From your description, it does appear to have been something different from your normal menstrual cycle. In many of these cases, an early miscarriage can result in symptoms similar to what you have described. While it is not often recognized, a large percentage of pregnancies end in miscarriage, often before patients even know that they are pregnant. Your past history of pregnancy and miscarriage is certainly one factor that could be considered as a risk for another pregnancy having terminated in the same fashion. A pregnancy test may be able to provide some information as well, but these often only become useful after the normal time for your normal menstrual cycle has passed (as taking these tests too early can not be helpful as the appropriate levels of the hormone tested may not be present). While home pregnancy tests are not perfect, they can be quite helpful. Speaking with your doctor is an important part of getting the answer that you need as well, as he or she can provide a better test and also provide other insight after asking further question. Any changes in your normal menstrual cycle should be discussed with your doctor, especially if there are other symptoms. Please speak with your doctor about this.