Hi, I'm 24 Years Old. My Problem Is That I

Hi, I'm 24 years old. My problem is that I have PE and when ejaculation is done then after 10-20 minutes I'll start feeling the uncomfortable pain on the tip of my penis and it last about between 2-10 hours. And my penis does not get fully erect(enough for intercourse but not as much as it should be. Maybe because of PE I guess?!?). I've gynecomastia also.
Does these symptoms indicating any problem and what can be the problem. Pain after completing normal orgasm is the thing I'm mostly worried about.