Hello Mam, the post extraction site looks normal. You can start lukewarm water salt rinse now as it has been more than 24 hrs after extraction.
Next Steps
While rinsing, hold the water on wound site for 1/2 to 1minute in each sip which will soothe the wound.
Health Tips
3 to 4 times a day rinsing for next 4 to 5 days is advisable. Generally it starts feeling normal in a week but wound takes a month to get healed completely.