I normally have my period for 12-16 days. I will have 4 weeks in between the last day of my period and the first day of my next one for a total of about 40-44 day cycles. It is irregular. During my period, it never fails, it blows in hard and heavy. I don't cramp but I do pass a ton of clots. My period gets so bad that I go through about 6 pads a day and tampons are useless. Anyway, I had about 40 days in between the last day of my last period and the first day of this current one. I tested negative several times On a pregnancy test however, I wake up every day for the past two weeks with nausea. I am very fatigued. I get headaches and I am warmer than usual. I urinate more often than before and am slightly constipated. This current period started very very light for about three days before it started getting heavy. That was on mothers day. Then it got heavier like my normal period but not as many clots as usual. Now I AM tapering off again as if at the end. My question is if I am pregnanct will I test positive even if I have a period? And will blood affect test results if I test while on my period?