Ever since I started taking Creatine Monohydrate this week, I just noticed a pink/redish mark right above my left armpit, which one of my friends labeled it as a stretch mark. I've been doing a lot of bench pressing, including the flat, incline, and dumbbell benches. Is that would it could be? A stretch mark?
I'm 19 and weigh only 150, and Im not losing any weight....I thought only people who lose lots of weight get stretch marks?