Gas trouble. Suggest me what to do.

I am diabetic since 17 yrs and hyper tensive since 11 yrs, using GLIMULIN MF FORTE in the morning, JANUMET 50/1000 in the afternoon, GLIMULIN MF in the night. CONCOR AM 5mg in the morning, TELMA 40 in the evening, GABAPIN NT 400 twice daily, ECOSPRIN AV 75 in the afternoon. But since last 6 months I have been facing episodes of severe gas trouble with bloating but no pain in the stomach. For this the doctor had suggested RIFAGUT 550 mg twice daily for 5 days, then after the reoccurrence in 1 month he again prescribed RIFAGUT 550mg for another 5 days along with VSL-3 once daily for 10 days after lunch, again there was an episode after 15 days FLUDAC 10 mg capsule was asked to be taken at the night but no cure.For the last 3 months,I am using Patanjali kumayasava at the time of gas trble. I have observed that in all these episodes there is one thing common in my diet which is watermelon/milk/tomatoes,etc. I doubt that it's high fructose level is the culprit.Kindly suggest me what to do.