Hello and welcome to HCM forum,
i would be glad to answer your query, according to the dental query posted by you i would like to inform you that presence of pus and blood post extraction are signs of infection, you haven't mentioned anything about pain, i assume there is none.
but, you need not worry, kindly visit your oral surgeon, he/she will irrigate and clean the area with an antiseptic solution and place a dressing over that area.
Your
dentist might prescribe you antibiotics and analgesics for 5-7 days to resolve the infection.
i would advise you to use an antibacterial(
betadine) mouth rinse(twice/day),
and warm saline rinses (3-4 times/day).
i hope i answered your query,
i wish you good health,
take care.