How Effective Is Breastfeeding As A Form Of Birth Control?

I just started on the mini pill a week ago and my doctor said that it would be wise to use another form on contraceptive for a month. My husband and I had a slip up after a week and I’m wondering if we are somewhat safe due to the fact that I’m still breastfeeding and have started the pill.

What Is The Easiest And Most Effective Way To Stop Breastfeeding?

My baby is now 1 yr and 4 months old, I don’t have milk anymore so I would like to stop breastfeeding.