Michelle if your thumb starts to become inflamed, more painful, you see tracking or anything abnormal please go to A&E - no joke here, if you have a infection and it becomes bad you will need to be hospitalize d and need IV antibiotics - thats the worst case senario but animal bites and puncture wounds are full of little evils and you need it to be sorted and anitbiotics. Tonight try and keep it up above your heartline.