Postpartum Undies!!!!

Y'all. I've literally only ever worn thongs since 13... I've also been on birth control since then due to so many issues so a tampon's been more than manageable 100% of the time... never really had to use a heavy pad. Getting closer to birth I'm beginning to get scared about after! What kinds of underwear (not just grannie panties like brands or particular kinds) do you prefer and favorite brands of pads?? Im so nervous, I have really never had to deal with this before so I'm freaking out!