i am on cycle day 20 of my menstrual cycle. this morning i noticed some pink tinged spotting after having gone to the bathroom. i have not experienced any bleeding since. i have no other symptoms. my normal menstrual cycle is 28-30 days. it is pretty regular and does not vary much. i am confused as to why i would have had spotting this morning, as a side note, i am not on birth control and my husband and i are trying to concieve. is this a cuase for concern? thanks for your help.