Do dental sealants hurt?

I'm getting sealants on my teeth tomorrow since I have groovy teeth. I am very afraid of shots. I am 14 and rarely ever get them and haven't had any blood drawn or anything like that since I was about 10. My dentist said, "No shots, minimal if any". Do sealants require shots at all or not? If he suggests a painkiller, will the pain be mild enough to bear without a shot?