Thanks for query,
Don't take pill for skipping your period it is dangerous.
This is a pills contains hormons .To understand our monthly cycle in which you gets precurseros of hormone from pitutary gland. This precursors of hormons stimulate endocrine gland
& that will affect your ovary & uterus
to prepare for ovulation & fertilisation that's why you gets ovulation & periods.Once you started pill The role of pitutary in back front.so you need to remain it working you have to withdraw pills so that it can work in a prescribed pattern.
If you go on taking pills it will some times stop working.This is dangerous.
Your spotting is due to this imbalance.
so take pills regularly for 21 days as directed on pack.This is essential.