What Causes Penis Glans Bruising After Rough Intercourse?

hi i had a nite of realy rough sex and my penis came out n smashed against the girl we both wer abit sore and then the next day i had a purple bruise on my japs eye near the skin that conects to my for skin im going for a test to see if i have anything tomorow but im just wonderin is it a bruise or is it sumthin else