Oo po, normal yan lalo na kung mixed feeding ka, ang breastfeeding helps delay period pero hindi guaranteed, especially pag may formula ka rin, kaya pwedeng bumalik agad around 6-8 weeks or even later, so walang isa-one size fits all talaga! A few of us mums experienced the same thing, some got theirs back within 2 months, iba naman after 3-4 months, so ang iyong body lang talaga ang bahala sa timeline, pero definitely mention it sa OB mo sa next checkup para sure na normal lang at walang postpartum complications, especially kung malakas ang dugo or may clots pa. Take care po!