Have you seen your ob/gyn already? If not -- please do. The symptoms (which you don't describe, so do they include bleeding, cramping, etc.?) could be symptoms of any number of gynecological problems and you should be checked out now, not later. Don't assume this was a miscarriage. I'm so sorry for your earlier one. Take good care of yourself and get to your doctor as soon as you can, to ensure something else is not going on that needs treatment.