Since you say you're a new shooter, here's a couple of things to consider.
1) Small double-action revolvers are probably the most difficult guns to shoot well. especially the light airweight ones. If you go that route, I would recommend you get plenty of practice at realistic self defense ranges - 10-21feet.
2) They do smack the hand pretty hard, and muzzle blast is severe with +P's.
Nothing most shooters can't handle, but it's another reason to recommend
practicing a lot.
That said, I carry a S&W 442, it's hardly noticable on my hip, and five .38s should be sufficient to handle any personal defense situation I would be likely to see.