How many maternity panty do we need?

I bled about 3 weeks . By the 2nd week it was more like a brownish stained. . I used a Laurier overnight pad , it was not so heavy just enough to cover the whole pad. I changed my pad everytime I go to the toilet. I didn’t count how many in a day. As I stocked up . I bought the Kotex panty too in large quantity however the largest size did not fit me due to your stomach being bloated after giving birth. The waist line sits around the c section stitch . The sizing of the Kotex panty is small for a L. Try getting a high airisms waisted panty from Uniqlo.