Help.

I was due on my period on Thursday started bleeding but for only 4 hours? Then Friday and Saturday had a dot of blood but only first thing in morning done a test on Tuesday (clear blue plus stick test) as I wouldn't originally been due off till Monday. And got this result looks like it came up with a faint positive. Day after done a clear blue digital but came up with not pregnant am I pregnant and I'm to early for digital or am I not pregnant.? Please help.