I have a son who is 3.5 years old... I had my last period on april 30.... for March and April period cycle was for 26 days... I don't remember for the months before... me and my hubby had sex on 8 the of may and 16th of may... I was expecting my period on 26th may... i missed my period and took a home pregnancy test on 27th May... the test was negative...i still didn't get my period... I have pain in my groin area and vagina. At times I am getting sharp pain in the abdomen... Is this a symptom for menstrual cycle, pregnancy or any other problems