Hi Emily, I have these problems with some of my pants too, because I am an hourglass shape
Sometimes buying a bigger size helps. But sometimes it does not help because the placement of the pockets on my hips means the inside of the pocket will always show no matter what size.
Perhaps you could take these pants to a tailor and get their opinion. They could tell you if they can simply alter the pants you already have, or if you should buy bigger pants for the tailor to make smaller. The tailor can tell you if they can alter the pockets while still making the pants look like everyone ele's pockets. They should be able to tell you the price and then you can decide if it is worth it.
I also get more creases in my pants due to my shape, I have a high waist. Sometimes I iron my clothes in between washes. Mostly though, I just don't care- I hate ironing!
If a tailor is too expensive or too much trouble, then maybe you should stop listening to the people who tease you- they are being mean. Buy a fantastic dress instead and 'wow' them with how great you look on the weekend! Or go to a hairdresser or wear jewellery that make people look at your face instead of your hips!