i dont no wut to do
First of all, what sort of pads are you wearing? Pads come in many shapes and sizes these days, and some are so thin you can't even tell you are wearing them.
I'd go to the store and pick out a brand that looks right for you. Even if your flow is heavy, you can get a lighter pad and just change it more often. Get something that says 'Ultra-Thin.' It's no good letting your mom buy pads for you - her body is different, and she is more used to the sensation of wearing pads than you. It's a combination of time (getting used to them) and searching around for that perfect pad.
If, after searching, you don't find one, then why not consider tampons? You'll need to buy ones specially designed for teens - mini tampons. Make sure they have a rounded head and are made of a smooth material. Then read the information inside the package and start trying to figure them out. I will say that it can take quite a few tries before you get the hang of it, so it's not a bad idea to have a pad you like anyway...even if you really want to make the switch to tampons.
Let me know if you need help knowing how to insert a tampon. I'm a pro explaining that stuff - and mainly because so many people are confused about it! You aren't alone.
Good luck.