brown discharge

Baile
I'm still breastfeeding my LO she is 1 we are currently only breastfeeding at night, I havnt had a period for a year until last month on April 5th I started and it last five days.. now I am experiencing brown discharge only when I wipe.. im not for sure if it's just my period being irregular ? I have not had any cramps or back pain I'm not sure what to think?