Thank you for your query on Healthcare Magic.
Dog bite with development of bruising requires vaccination
If tetanus is not taken within the last 5 years, you take tetanus toxoid
As you have received rabies vaccine
in December for three dose as pre exposure prophylaxis, now you will requires only two doses of anti rabies vaccine with a gap of 3 or 7 days.
Therefore I advise you to consult the Physician and take rabies vaccination as per his advise.
Hope I have answered your query.