hi, im just wondering if i can be pregnant..i had my last period but its was just spotting for the first two days then i actually bled for a day and then it stopped. its been a month and i started again but this time it was brown which is old blood. but it started to get red..its my second day on my period but still very light. i took a test after my light period last month and it said negative, could i be pregnant? does blood even inturrupt the results to a test? what should i do?