Hi, I'm 24 years old male. My problem is that my penis gets swollen during and a while after sex. It really hurts even when I put a condom on. Me and my girlfriend often have protected sex but usually unprotected sex (and here hurts the most). I started to have this problem like 3 weeks ago, and it's as painful as the beginning. My penis gets red under the foreskin (on the tip of the penis, and on the ring) and under the penis (on the foreskin, right next to the testicles), and it really hurts when I get the foreskin out to see how swell it is, and it hurts when I wash it, even if it's just with water. I thought it could only be a small cut because at the beginning was just like little red dots, now its just spread all over. I would like to know if this is a big problem or I've heard it could just be eczema or dermatitis. please answer me back the soon as you can!