I took the emergency pill Nordette twice during March and got bleeding/spotting after taking the pills on (wasn't sure if it was my period) on March 6 and March 26. So far, I have not gotten my real period once during April and I am worried that I am pregnant. However, last Tuesday, I took a pregnancy test and it came out negative. Other than the late/missed period, I have no other symptoms of pregnancy. Should I take another pregnancy test?