Pregnant?

Okay I'm going to try and not make this long  but as of today I am 14 days (2 weeks) late for my period I've been having sore breast for awhile now (since 8 days late ) and was getting dizzy spells as I am not getting those anymore starting yesterday I'm getting very nauseous I haven't vomited (yet) but this is the weird part I've taken many of pregnancy test and they come out negative the last test I took was a few days ago I did go in for a blood test yesterday and am waiting on the results any ideas ?