OKAY. I HAVE IRREGULAR PERIODS. BUT LAS SEPT.30 I HAD A PERIOD BUT STILL HAVING PREGNANCY SYMPTOMS LIKE EXAMPLE OF THROWING UP,FATIGUE,VERY MOODY,SO I WENT TO THE DOCTOR THEY DID URINE,BLOOD BOTH CAME BACK NEGATIVE THEY TOLD ME IT COULD BE OVAULTING,OR TOO EARLY TO DETECT...SO OCTOBER 31. I HAD MY PERIOD BUT SYMPTOMS GOT MORE INTENSE BACK PAINS,BAD CRAMPS,BELLY GOT A CURVE IN IT NOT SAYING IM PREGNANT? IS IT A POSSIBLBILITY? PLEASE HELP???