<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi Dr, i am 24-year-old female my last menstrual period was 31 May and in this month i missed my period, yesterday i did a pregnancy test, which is negative, i have also stomach pain and feel semen type something in urine plz help .. my weight is 43 and hight is 5 feet ad 3 inches  <response>: Hi. You seem to be underweight, but as long as you are well nourished I dont think this should be a problem. If your menstrual cycle has always been regular, and this is the first time you have missed your period then I would suggest waiting for a while longer and then going ahead with a serum pregnancy check, and later even an ultrasound but only 6 weeks or so later. For now, my best wishes are you with you. 