I am on the pill and have started into my second week on this month's cycle. Yesterday and today I noticed spots of blood on my underwear. What could this be and should I be worried?
This sounds like "breakthrough bleeding" which is not a serious complaint. If the problem recurs on each new cycle it might be necessary to change your pill to one containing a higher level of oestrogen. It is important to keep taking your pill through the spotting otherwise you will disrupt the pattern of your menstrual cycle. Breakthrough bleeding usually settles within a day or so.