How much do you buy 輕樂偶 at 藥房? I found that it's about $100 at Mannings/Watsons, so expensive. Family planning Association also has this. It's $40 only. I don't know if you need to do checkup at Family Planning to buy or not.
I know that you cannot just buy at counter. You need to see nurse. You can call them and check.
The doctor or instruction notes said basically not a problem. For myself, I am on pills for 7-8 years. I used 袋袋 for almost six months (when want to have baby) scaring that the pills will have some side effect on baby.
You can consult doctor advice when you do checkup.
After stop pills, the period will not be so stable in the first few months.