Hi,
You did not mention the medicines you were taking. Nausea you are experiencing may be a result of the medicines you are taking in addition to lack of proper diet which is due to difficulty in eating. Don't take medicines on empty stomach. Have proper diet as permissible and prescribed by your treating dentist.
Please avoid marijuana and any form of smoking and drinking of alcohol till your healing process is complete as it's a deterrent to healing.
Take fruit juice, milk and soft cold less spicy food items. Eat on small intervals.
Follow all the instructions provided by your dentist.
Next Steps
Contact with your treating dentist for determining the possible causes of nausea and to see if any change of medicine is required.
Health Tips
Do not use straws, drink from a glass. Using a straw with sucking motion can cause more bleeding by dislodging the blood clot. Avoid carbonated beverages or very hot foods or drinks. A soft, non-chewing diet is recommended for 10 days to 2 weeks after tooth extraction to allow the gum tissue to heal.