I am 28 yrs of age I had my tubes tided 2009 I am spotting pinkish blood I am 1 week early for my regular cycle and I'm even having sickness I've took a home pregnancy test and it stated results are not valid until 1 week after a late period please help could I be pregnant?

It sometimes happens, depending on how the tubal ligation procedure was performed, but it is not common. Best to wait and see what happens when your period is actually due. There are other possible reasons for the bleeding.