I'm regulare, every 24days on the dot, sept 29 oct 3 was my last cycle, then I went to the doctor because for the first time in my life I got a period again  oct7- oct10, very heavy flo, they took a pregnancy test came back negative, now we are nov 20 an I took another home pregnancy test an it is negative. What else could be going on? I don't even have any symptoms of af coming anytime soon... Please help