Pregnant or not?
In a nutshell, there are 2 types of spotting (abnormal bleeding).
Either from abnormal hormone
production or from a lesion in the reproductive tract (tumor, polyp
, infection, abnormal pregnancy
, etc.). This answer is greatly oversimplified as causes depend upon age, pregnancy status, physical exam, etc. And spotting can be harmless and just a nuisance or be a harbinger of significant disease.