Hello,
I have gone through your query and understand your concern.
As you said, this brown discharge is normal during the first few periods.
But it may take up to 3 to 6 months to get the problem settle down.
As birth control pills are hormones, Our body have to make the equilibrium with these external hormones.
One more thing is, you have to strictly take the these birth control pill at a specific same time every day.
You have to choose to take this pills at time of day that is easier for you to remember.
Else fix the time in after your evening meal or at bedtime may help if you have
stomach upset or
nausea with the medication.
Taking at varied times regularly makes these pills ineffective and possibly you will become pregnant.
Thus follow a regular schedule.
Hope this helps.
Please write back for further queries.
Wishing you good health.