Sweetie, I am having the same exact problem! My youngest is 6, and when she was 5 mo old my husband got a vasectomy. His count came back as "non-existent." But for the last week I have been feeling what seem to be kicks, and they are happening throughout the day. I took a test which also came back negative, but am really starting to have doubts that it is accurate. Last year I had really delayed periods from October to February (I was anywhere from 5-7 weeks late between each one) and then they corrected themselves. I have gotten my period every month since, but they have lasted about half as long as they normally do (3 days). You would think that gas would eventually go through your system and then be done, but that doesn't seem to be the case for us. Have you had any other "signs" of pregnancy like unexplained weight gain, breast tenderness, more frequent urination or increase in appetite? If so, the test could be a false negative, and I would recommend going to your doctor to get a HCG count (blood test for pregnancy) and take things from there. I am getting ready to do that right now!!