Sneaking pads and tampons into school

I go to a private christain school and it's a school of 20 high schoolers. We, of course, have to wear uniforms and we don't need backpacks or purses, as we use paces and scoring.; so when it comes that time of the month, what am I supposed to do with my pads and tampons? I tried putting them in my pocket but you can still see it. Also, people would get surpisvous if I brought a bag or a little tiny purse and most likely look in it. I'm trying to avoid a embarrassing moment!