hello, i am 19 years old, and i am trying to have sex, but the problem is that, i have foreskin, an when its not erected it covers the penis, an when it is erected it still covers the whole penis, i also wore a condom, but whenever i put my penis inside the vagina it hurts me, its like the penis wants to come out of the foreskin, also, my penis then goes sloppy, an does not stay erected. i really need your help please