gas and twitching pains in my cervix?

Hi,
Welcome to ehealthforum,
The symptoms that you describe could be suggestive of possibility of early pregnancy. The appearance of symptoms depends on how your body reacts to the changing hormonal status. Few women can experience symptoms as early as 24 hours after fruitful intercourse. Look out for development of any other new symptoms. Wait and watch for your next periods. If you do not start with periods within 10 days of expected period dates or if you develop any new symptoms suggestive of early pregnancy, or if you get abnormal periods, consider visiting your doctor/gynecologist for further examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Take adequate rest. Drink plenty of water. Maintain healthy diet.
Take care.