Unexpected Bleeding During Possible Pregnancy: What Could It Mean?

Question
HELLO I WONDER IF YOU CAN HELP ME I'M 23 I HAVE 3 CHILDREN AND MY LAST PROPER PERIOD WAS 24/8/04 AND THAT WAS NORMAL BUT ON THE 15/10/04 I BLED FOR 2 DAYS AND MY NORMAL PERIODS ARE FOR 5 DAYS IT WASN'T LIGHT BLEEDING BUT NOT AS MUCH AS MY NORMAL PERIODS I ALSO HAD BAD CRAMPS I'VE HAD A MISCARRIAGE BEFORE SO I KNOW IT WASN'T THAT AGAIN BUT AFTER 2 DAYS OF BLEEDING I DIDN'T HAVE ANYMORE CRAMPS AND ALSO I USUALLY THE BLOOD STARTS OFF BROWN THEN RED THEN BROWN THIS TIME IT WAS RED THEN NOTHING AND SINCE THE BLEEDING HAS STOPPED I'M GETTING MORE PREGNANCY SYMPTOMS I HAD THEM BEFORE I BLED BUT NOW I HAVE THEM REALLY BAD I HAVE NAUSIA AND MY NIPPLES ARE PURPLE MY VEINS ARE SHOWING REALLY BAD AND I HAVE TO GO TO THE TOILET ALOT MORE TO SO MY QUESTION IS CAN I BE PREGNANT EVEN THOUGH ALL THIS HAS HAPPEND PLEASE HELP! THANK YOU SO MUCH

Answer
If your last period started on August 24, and you normally have a 28 day cycle (from the first day of your period until the first day of your next period) ovulation occurs on cycle day #14. You can only become pregnant if you have sex on cycle day #13, 14, 15,  or 16. That would have been on September 5,6,7, or 8. If you did become pregnant on one of those days, a pregnancy test would not show a positive result until September 20-27. If you are having symptoms of pregnancy, take a pregnancy test. By now it will be accurate. The bleeding may have been some abnormal bleeding and not your period. However, since you have missed your period in September, you should first take a pregnancy test.