I'm dealing with a lot of discomfort because the skin at the tip of my penis doesnt retract during sex, and it ends up causing pain. Even though I dont have issues while masturbating, the foreskin just wont move back, not even a little, and its really affecting my ability to have sex. What could be going on, and what should I do about it?

It sounds like you may have a condition called phimosis, where the foreskin is too tight to retract. This can cause discomfort during sex. I recommend consulting a urologist to explore treatment options, which may include topical steroids or, in some cases, a minor surgical procedure to improve the condition.