Hello and welcome to Health Care Magic, I have gone through your query and I can understand your concern regarding the whitish bump at the extraction site.
Extraction site usually takes a days to a week to subside the discomforts of extraction with 3 or 4 weeks to completely heal the socket.
After the Extraction of the Tooth is done, A clot is formed at the extraction site which plugs the socket. The outer surface of the socket clot plug sometimes due to food substances and unhygienic environment does change into whitish colored bump as you said. However, it should be properly cleaned with Normal Saline Gargles and Mouth Washes in order to prevent the dry socket
Looking at your case history, i would suggest you to maintain the hygiene of oral cavity positively with Normal Saline Mouth Rinses
and Taking Proper Medicines Prescribed by the dentist
. Taking extra care not to chew from that side as the food when entrapped in the aocket can also be source of infection.
Though it is only 12hrs, so mild pain and soreness of jaw is obvious. But if the pain starts to increase in coming days upto 3rd day, You should have an appointment with the dentist in order to treat the dry socket Condition.
But i think Maintaining good oral health and proper medication with mouth rinses at this point will not lead to that condition and Try NOT to dislodge the clot with your hand or toothpick.
I hope this was helpful.
Thanks and Regards
Dr Himayun Mir