Noun. 1. incense-a substance that produces a fragrant odor when burned. chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.oun. 1. incense-a substance that produces a fragrant odor when burned. chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.
1 Vaginal bleeding during the first trimester of pregnancy is relatively common. 2  Some amount of light bleeding or spotting during pregnancy occurs in about 20% of pregnancies.  In some cases, particularly when there is heavy bleeding and cramping, bleeding during pregnancy is the sign of a serious problem.
During early pregnancy, it is not uncommon for a woman to have bleeding or spotting. This bleeding can sometimes be mistaken for a period. Twenty to twenty-five percent of women have bleeding or spotting during pregnancy. The bleeding is generally not as heavy a regular period. However, if a woman did not know that she was pregnant, she may assume the bleeding was just a light period.