I have a bite on my foot that has swollen, my foot has ballooned and it's black around puncture wound, on antibiotics for last 24hrs but no different?

SWOLLEN FOOT BITE: VERY FEW SKIN PROBLEMS WILL SHOW ANY CHANGE IN JUST 24 hours! PLEASE GIVE IT AT LEAST A WEEK! BEST LUCK

AT LEAST 72H: At least 72 hours are needed for the WBC to decrease, and see SOME clinical improvement. You've probably been given a 10-14 day course; take them all. If you continue to get worse instead of better, it may be an abscess. Then, call your doctor.

Foot infection: Swelling following bite could be infection or allergic reaction. Most antibiotics take 24- 48 hours to work. Certain antibiotics like flucloxacillin should be taken either an hour before or 2 hours after food for them to work well .Antihistamines can be tried along with antibiotics. If swelling doesn't settle or starts to spread , become unwell, or there is numbness in foot then see doctor ASAP.