Hi Trevor,
These skin issues are common for boys of your age. I think puberty brings all these hassles along with it. But don't stress over it and just chill. I'm sure you're not the only one among your friends facing this problem. One of my cousins has gone through this and trust me he was equally miffed with his red marks and unwanted acne like you are!
Firstly, work on your diet. Avoid junk food as much as you can and shift to healthy eating. Take ample fluids and follow a workout routine. Sweating helps your skin to breathe and relax at the same time. Take morning walks on green grass and again drink lots and lots of water.
Also, be careful of the bath products that you're using. Don't use products with chemical ingredients and rather try organic skin care products. Regular body products have some amount of chemicals and medicinal properties that might be really harsh for your already sensitive skin. Go for organic and natural skin care products like dead sea mud facial cleanser, anti acne facial mask by
http://www.castlebaths.com/skin-care-for-men.html. I know people who have benefited from these products. I'm sure you'll love the results!
Best of luck!