Anyone use Flex before and gone back to using after birth?

I’m currently still pregnant and am not due until February, but I really am thinking of what I’ll be using after baby gets here. I know there’ll be heavy bleeding after birth but so much that pads are all I’ll be able to use ? I’m sure my period will never be light again after this, they do have a medium and heavy option. Im not sure if I’ll still be able to use them . I so want to ! but I need some insight! HELP!

All tips and comments welcomed!