Belly button piercing pain?

I just got my navel pierced on the 22nd. at first it didn't hurt that bad, but the last few days I've experienced some abdominal pain, like I can stretch or bend certain ways. Is this normal? Also, It's becoming even more red and crusty everyday. how long will it take for the redness to go away? I clean it around 4 times a day with a cotton swab, wash it with dial soap and use the hot water salt shot glass thing. Plus I'm going to Vegas from the 11th to the 14th of July; will I be able to go swimming at all? Thank you!