The breeder of my first horse lost her sister to a similar accident. A horse kicked her in the stomach and she died from a crushed spleen. Cali, get into hospital or at least a doctor. This is your health, your livelihood and your reputation on the line. Not taking injuries seriously isn't a good reputation for a horse person. If something does go wrong in the next day you'll potentially be out of work even longer and long-term problems could result.