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.
Implantation spotting or bleeding can be an early sign of pregnancy in some women, but what is implantation bleeding and when does it usually occur? First, to understand this early symptom of pregnancy, you need to know what happens during implantation.