my mom drives me CRAZY😡😡😡 HELP ME

So we're travling and were about 5 hours away from home.. And I started my period... But I have no pads so I have BEGGING my mom to buy me pads but all she is doing is just laughing and making jokes and telling my dad😤 we've passed like 89 gas stations and she won't buy any!!!!!!!! I've been wearing the same pad for 10 hours!!!! Help me😫😫😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭