9 days late before my last period & a miss period this month am im pregnant nov tests blood & htc test negative, so could I be im pregnant?

It is possible. It is now december 27th 2013. If your last menstrual period was november 2013, ( you report that your pregnancy test was negative in november), you are 9 days late for this months cycle and you have been sexually active over the course of this month, then there is a chance that you may be pregnant.