Welcome to HCM
I would like to tell you that getting 6 molar extracted takes a long time & patience for healing.Many post extraction effects that are seen like:-
-difficulty in opening mouth
You don't need to worry for any of these symptoms.
The whitish film that you observe is a part of healing known as granulation tissue.You don't worry for that & regarding dry socket
i would like to ask you that whether you have history of smoking? The blood clot’s formation can be slowed down when a person smokes, either from the suction done during the smoking action, or from the chemical toxins that come from a cigarette. This can lead to complications such as a dry socket, which is a temporary and very painful condition that occurs when the blood clot forms slowly.
Take some rest & start with amoxiclav-625 twice a day along with zerodol-SP twice a day.Also take some multivitamin
20 mg if acidity persists.Also do warm saline rinses 3-4 times a day.
Visit your dentist
for regular check-up.