if it is hugely painful, go see a doc. otherwise, "buddy tape" it to your other toes/foot with old fashioned adhesive tape, or the strapping tape that athletes use. wear hard soles shoes to support it--not just bendy tennis shoes. ice it--15 minutes every hour. elevate it. don't try to wear heels. and take an anti-inflammatory--aspirin, ibuprofen, tylenol, whatever you can tolerate. elevate it. remember that if you walk too much on it, it will tend to re-bleed into the area when you take anti-inflammatories. and elevate it. every time you sit down. it can take up to 8 weeks to heal, so be good to yourself. and if it is "bent" the wrong way, or rotated on itself at all, get thee to a doctor!
(been there, done that--both feet, different times. luckily, the old nurse wears clogs, and that helped. bare feet are not one's friend when one is in a hurry...)