Yes, you can do the Dawnguard arc to contract vampirism, or If you're in a hurry, you can just find a vampire encounter and then neglect to cure yourself of Sanguinare Vampiris afterward. Obviously, this won't work if you're already immune to disease, but that's pretty easy to avoid. I don't have any mods to recommend, as I think the out-of-box vampirism is pretty good, though I'd recommend you NOT use the unofficial patch, as it "fixes" Vampire Necromage (which honestly doesn't need fixing, imo).