Ms.flo is p due!!!!!!!!!!!?

ok i don't know what the - and the+ signs on the e.p.t pregnancy test mean.i took one yesterday and it had an - sign.i think it means not pregnant,but i dnt know.does it??i didn't get to read the box cause my husband had put it in the outside trash.can someone pleasetell me the differencesin the - and the+.??but my period is four days p due today.and i havent had no signs of me bout to come on.but i think i could be preggo.iam having no morning sickness or nothing.menstural like cramps and they come and go n my hurt when i put pressure on them.and we are trying for our first.we ahve been trying everysince september the 9.and we have unprotected everyday.and my period was suppose to come on the 24 of this month but no ms flo.my last period was on the 26 of september.and he comes insid of me all the time wen we have .i think iam losing it iam worried to much am i??i went on myfertilityfriend.com and americanpregnancy.org and it told me my fetile days and mt next period.can someone HELP ME WITH MY QUESTION PLEASE???????and can someone go on the websites for me and type in my last period day which is the 26 of september and see what u get.myfertitlyfriend.com and americanpregnancy.org