It has been 7 weeks since I've taken plan b and I am now 29 days late (my last period was on March 22 and ended March 26). I took a pregnancy test 4 weeks after plan b and it came out negative and I then took another pregnancy test a week later and that came out negative as well. I haven't had any pregnancy symptoms such as fatigue, nausea, vomiting, swollen or tender breasts etc. could I be pregnant even though I don't have any symptoms?