well nlowe, I was recently having the same problem that you are experiencing. The last time I saw my period was April 24, 2007. By the 1st week of June I still had not seen my period. I took about a dozen over the counter pregnancy tests that kept coming out negative. I was very confused because I was having all the pregnancy symptoms. By the end of June my period still was not here! I figured something was wrong with me, I thought I had tumors or something. So on July 10th I schedule an appointment and found out I was 7 weeks pregnant through an ultrasound! So just be patient and DO NOT take that bc! give it to the end of August and see what happens. GOOD LUCK!