Hi, i dint have my periods yet here is what my case is.On Jan 26 my periods started, on feb 2nd i had sex with my bf but he did not entered his organism. On feb 14 also we had sex but that time also he dint ejaculated sperm on my organism. I had a late period that month. I got periods on 1st march....The problem comes now, on 26th march we again had sex but he dint ejaculate in my organism. its already 15th April now but i got no periods. I dont have any symptoms of pregnancy. On 6th and 7th april i took home pregnancy test but both were NEGATIVE. I'm not getting wat to do....I'm normal by health no changes or any symptoms of pregnancy....Please Help Me