When did you get your period after a baby?

This may be a but tmi, so sorry in advance. I'm just a few days over 6 weeks post partum wirh my firsr baby and I have my check up on Tuesday, but my discharge seems to be kinda brownish/pink the past day or so..the texture is similar to when I was bleeding after having the baby, and I haven't had what used to be my period symptoms.. but I wondered if that could be what's happening..? The nurse at the hospital said it normally starts coming back 7-9 weeks after the baby and I exclusively breastfeed also, which I know normally delays it too, so what's going on? I'd appreciate a little advice please..I'm new to the post partum life..