Hello everyone?. Again about the cycle... Baby is 3 months old, first …

Hello everyone?. Again about the cycle... Baby is 3 months old, first period was from August 6th to August 11th, very heavy. Then on August 19th they started again. Not very heavy, average like that... And yesterday almost all day and night there was nothing, but today they started again ?‍♀️. Has anyone had this? What is it? First time like this.