I haven't had a period since aug. 31 I had a little spotting in begging of September took 6 test they all came out negative , two Saturdays ago I felt like I was miscarriaging again. Is it possible that I am pregnant but the test arnt showing?

Have you had a miscarriage before? Or are you referring to the light bleeding at the beginning of September as a miscarriage?

It is possible to be pregnant and not register positive on a HPT. If you are late on your period, I would suggest going to the doctor and getting a blood pregnancy test to make sure.