Urology

[truttburken]

So, a couple of months ago i was hit right on the penis with a tennisball which hurt really bad, but the pain went away after a few hours and I didn't have any problems for a long time. But recently it's started to assume weird shapes when it's flaccid. It mainly occurs after it has been cold and withdrawn and is starting to warm up again, as it gets bigger further out and is really thin at the root. This looks really weird and it can remain in that shape for about an hour before it goes normal again, and I'm really worried about it. Should I see a doctor about this, or is this just normal?
I have no problems getting and maintaining an erection, and it looks fine most of the time.