Is there a such thing as a faint negative on a pregnancy test?

Hey well last Saturday I took a pregnancy test and it showed up a very faint - ... my husband said he seen a line going up and down and my sister said she seen a plus sign. Me however all I seen was a very very faint neg. and today I looked at it and it had nothing there... I read that there isn't a such thing as a faint neg. Please help.. I'm 22 days late for my period and its been 53 days since my last period.. Please help me. I'm sick and my back hurts and im having stomach cramps, and with that i feel like imma puke.. Thank you!! Has anybody else had this and still be pregnant?