Hi mama! I'm not totally sure kung ano ang kinuha mo on July 21, test ba, ultrasound, or something else? Could you share a bit more details so I can understand better? In any case, kung ito ay medical result at may concerns ka, it's best to follow up with your doctor right away para ma-clarify ang meaning ng results mo. They can explain kung ano talaga ang meaning ng positive or negative for your specific situation. Take care!