Even though Migraine
incidences are low in old age group your symptoms are typically suggestive of Migraine. Since you are 65 years old, certain diseases like temporal arteritis
should be ruled out and checking of your vision is mandatory which all need an out patient check up.
In some Migraine attacks are precipitated by some factors like certain food, tension etc called Triggers. Identifying exactly what it is and it's avoidance will reduce attacks.
The drugs you have mentioned are used to get relief in an acute attack of the Migraine, overuse of the same cannot be advised. But your doctor can help you in putting you in some regular medication, what we call Migraine prophylaxis, will definitely decrease the incidence of attacks.
No drug is absolutely free from side effects but they will work effectively and provide you relief when judiciously used.
About the "too much" gas problem
, a proper diet advice and antacids will relieve it.
Even though the above mentioned complaint can have some contribution from too much analgesic
use others don't have.
Pranayama will definitely help you, as it's proven that Yoga and Meditation
have beneficial effect not only in Migraine but in so many conditions.
and TG levels again needs proper diet control and a regular exercise schedule, and drugs if necessary.
I would suggest you to have a medical check up for the same.