Help pls going insane! I got my AF 3 days early & it was only 3 days when it is normally 7! I am usually very very regular in both timing & duration.I've also felt absolutely horrid for for almost a fortnight. Headaches, dizziness, occasionally nauseous. So of course I took a pregnancy test. Actually I've taken 5!!!! All bfn's. What could it be??? Any advice helpful.