10 days after intercourse during ovulation, some people may feel some discomfort, such as nausea. This condition is called "ovulation regurgitation." This can be caused by a variety of factors, including indigestion, acid reflux, and pregnancy reactions.

1. Watch your diet: If you are taking medication or have a chronic disease, follow your doctor's advice. You should avoid spicy, greasy, and irritating foods to avoid worsening your symptoms.

2. Stay Rested: Getting enough rest and sleep can help reduce the symptoms of nausea. If you feel uncomfortable, try to avoid overexertion.

3. Drink water: If you feel queasy, try to drink plenty of water to aid digestion. You can also talk to your doctor about which liquids can help relieve regurgitation symptoms.

4. Medication: If your nausea symptoms are severe, you can consult your doctor to find out whether medication is needed. Some medications, such as proton pump inhibitors and H2 receptor antagonists, can help relieve regurgitation symptoms.

If you feel queasy after having sex 10 days after ovulation, don’t worry. Following your doctor's advice about eating well, staying rested and drinking fluids, and seeking medication can help relieve symptoms.