Was it alright of me to do?

Well, there was this party that my friend had that i went to recently. Midway into the party, there was some guy who i didn't know, and he said, "Hey. How are ya doing?" He looked a little drunk to me. He then made a quick move and touched my , so I kicked him in the nuts as hard as i could with the tip of my high heels. He immediately went down to the floor, cupping his , and was curled up in the fetal position moaning and groaning. After a couple minutes he threw up all over the place and i left the party. Then a couple days after, my friends at school said the guy had to have one of his removed cuz the kick was so hard. I didn't mean to do damage. I just wanted him not to touch me and i knew he probably was drunk and planning to do something bad. Was this right?