Hi, welcome to HCM.
You need not restrain yourself completely from physical activity. It will not help you from getting cured.
Whenever you have pain take rest for some time.
You need to consult your gynaecologist and start the proper treatment for cyst. Also do regular follow up as advised by your doctor. It will get resolved in few months. If not then operative intervention may needed depending on follow up study.

Hope I have answered your query.

Regards.

hi there,
am dr.surendran
nice to meet you here in HCMagic
Regular exercise, healthy foods, and weight control are key treatments for ovarian cyst. Medicines to balance hormones may also be used.

The first step in managing ovarian cyst is to get regular exercise and eat heart-healthy foods. This can help lower blood pressure and cholesterol and reduce the risk of diabetes and heart disease. It can also help you lose weight if you need to.

Try to fit in moderate activity and/or vigorous activity on a regular basis. Walking is a great exercise that most people can do.

Eat a heart-healthy diet. In general, this diet has lots of vegetables, fruits, nuts, beans, and whole grains. It also limits foods that are high in saturated fat, such as meats, cheeses, and fried foods.
If you have blood sugar problems, try to eat about the same amount of carbohydrate at each meal. A registered dietitian can help you make a meal plan.
Most women who have PCOS can benefit from losing weight. Even losing 10 lb (4.5 kg) may help get your hormones in balance and regulate your menstrual cycle. PCOS can make it hard to lose weight, so work with your doctor to make a plan that can help you succeed.
If you smoke, consider quitting. Women who smoke have higher androgen levels that may contribute to PCOS symptoms.
Getting treatment can reduce unpleasant symptoms and help prevent long-term health problems.
It is important to see your doctor for follow-up to make sure treatment is working and to adjust it if needed. You may also need regular tests to check for diabetes, high blood pressure, and other possible problems.
hope helped your query
regards dr.surendiran