pubic pimple

So today I noticed a bump on my outer lip, and it hurts. It's not a bad pain, but it was. I'm not sure what it is. I think from messing with it so much, that entire part of the lip is like swollen and red. How can I get rid of it? I'm thinking it could be an ingrown hair, because I did shave about a week ago. But somebody help. How do I get rid of this thing? I have a hot washcloth between my legs right now in hopes to form a white head or something.