hello i had my last peried july 18 2011 and now it is sept 29 2011 and still havn't gotten it. i am pretty regular for the most part on the average month. i did have a baby almost 8 months ago but have had 3 regular periods since then. i have taken many home tests and gotten negatives, i have had a dr test and blood work done also showing neg. i have had the odd spotting here and there, but nothing that really even showed up on the pad just showed when i wiped. so could i be pregnant even though the tests are showing negative?