Me and my boyfriend had a sexual contact and he didn't ejaculate into my vagina, but I missed my periods for this month. My last period was 8/04/2014 and this happened on 21/04/2014. I took the pregnancy test twice, the last was done on 15/05/2014. The result was negative. I'm scared if I'm pregnant. I have no symptoms like nausea, craving for food, etc. Could you please help me out?