No pads or tampons!

So I had forgotten this morning that I'm about to start my period and I'm traveling with my mom and her friend a few hours away all weekend and I had forgotten to pack pads or tampons and I can't talk to my mom about it because I'm just not close with her and she'd make a huge deal about it does anyone have any suggestions for not being able to buy pads or ask anyone to buy them for you? I've been considering just going through the weekend with TP in my underwear but I'm not sure if that'll work since I decided it'd be fine to pack white pants😒