I'm breastfeeding. Right now, it's almost 2 months after my last bleeding, yet I still don't have my period.

Question

Hi, I'm taking my Lynestrenol and it's my 3rd month of intake now. In thie first month of my intake, I had a slight bleeeding. After 1 month and 8 days of taking the pill, I had an intercourse with my husband. I'm breastfeeding and had my baby 2 months after taking the pill. Right now, it's almost 2 months after my last bleeding, yet I still don't have my period. I'm worried of becoming pregnant again. Is this just normal for women who are taking the same pill?