Dazed667

Hi everybody,
I don't feel really well talking about sex issues and i don't know much but I would like your opinion. Here it goes: One day, while I was masturbating, I ejaculated so hard that I felt some pain while ejaculating. Not great pain but it ached for some hours. My skin was dry enough and I felt that there was too much pressure from inside and the semen had such speed that it in a way injured me. I felt like i had cut myself.I then noticed that the "opening" in my penis (sorry for my English but it's not my mother-tongue so i don't know how else to describe it) grew a bit and got wider . This happened about 2 months ago, i was "virgin" then but since then I have done sex, and I have noticed that nothing else has really changed, , I mean i don't feel any pain or anything like that, but the ejaculation just feels a bit different and maybe I don't "feel it so intensely any more". Is this normal to happen at some time? Has it happened to anyone of u?

Thanks