A cycle comming upto 7 days late in an odd cycle is accepted as normal. The slight spot may be a prelude for full fledged menstruation
, as are the cramps and backache
. You can try any combination of Mefenamic Acid
+ Anti-spasmodic if that is getting uncomfortable. Spotting for 4-5 days after the menstrual flow may need to be investigated if it recurs or worsens.