If doctor did not put suture/stitch, that means it was not require so do not bother much.
Secondly, don't touch or disturb extraction area.
Give some time, it is healing. Let it be.
Next Steps
Follow instruction as per suggested by your doctor like
Have some cold things like ice cream/ juices frequently today
Have medications as per advise
Health Tips
Avoid hot/warm liquids/ solid diet for initial 24 hours
do not smoke for 72 hours
Do not spit forcefully