My girlfriend and I have not had sex till now. But last week, on the 2nd, we went oral on each other. During that, my penis touched her vagina a few times, without a condom, but I did not enter her or ejaculate in or outside the vagina. Still as a precaution, she took the morning-after-pill within 7 hours. She had been taking Sysron-n for the past 4 days before the 2nd, as her period was delayed. Her due date was 14-15th. But even after four days of Sysron-n, she hasn t had her period till now. It s 9th today. Moreover, she has been suffering from nausea, headache, and body ache for the past 4 days. Do we need to worry about pregnancy?