Ive been having regular menstrual cycle.. 28days. But last october, my period came on the 31st day. The next month on the 25th day, then next on the 29th, then 26th. This was unusual for me because I always have my period exacrly on the 28th day from the 1st day of my last cycle... Now its the 36th day, still havent got my period... Tried 3 pregnancy tests, all turned out to be negative... Can i still be
pregnant?