I Got My First Period After Giving Birth Last October

I got my first period after giving birth last October 4 and take my daphne pills after my period ended then I got my period last October 31 4days earlier than the last time I continued taking my dahpne pills until I finished the first pack then started again with the next pack but until now I don't get my period I'm a full breastfeeding my baby is one year old and 4months now is it okey I'm worried please can anybody answer thanks