You'll be fine tomorrow. In fact, if you hydrate and eat properly, you could ride today. Just don't do any heavy weight lifting for 24 hours as that can be problematic for some reason. You just reminded me that I have to make an appointment. The little vampires love me since I'm O+ and am not afraid of needles. Although I did throw up once on a UCLA sticker. But that was more a visceral reaction to having a needle "dig" (where they can't find a vein or it rolls around so they dig around for it and your body can't figure out any other way to tell you something is wrong - no nerve endings in and around the veins - so it makes you sweat, feel faint and get very nauseated. Really not pleasant, might I add).