No period, but negative home test and negative blood test.

Help, I need info on what's going on with my cycle right now. My husband and I have been trying to conceive for 6 months now. We baby danced when I ovulated on the 8th of August, and have NOT had a period this month. I took a home test on the 24th and it was negative and took a blood test at the doc and it was negative as well on the 25th. Today is the 29th and still no period. According to my last few cycles I should have started on the 11th or 19th. Any ideas on what's going on? Am I for sure not pregnant or is there still hope?