Hello people,
I'm happy to say he's MUCH better now. It's been maybe 6 hours. Though he's not 100% yet. But close to. Barked maybe twice in 6 hours. Very good.
I ended up calling many "animial hospitals" in Toronto. No luck. All were closed. Unreal!! Even the "emergency hospitals". Except one that wanted $144 CAD to "start" (consultation). INSANE!! Taking advantage of the fact that we dog owners are probably desperate if calling them.
Chose to drive to my dog's vet's office. Online it said they were to be open at noon. "Appointment Only". Decided to chance it any how. When I got there their sign said they are closed on Sunday.

So while I was there I dropped by the Pet Smart (next door). Bought a bottle of "Gas Be Gone" (LOL! Stupid name but catchy...by Century brand). Tablet was big but my dog LOVED it and asked for another. Only gave him one. WORKED!!
Due to his gas (and maybe bloated feeling) he couldn't "stand on 3 legs" to pee. After the pill he has no troubles when I took him for a walk in the park. Kept me up all night. We both didn't get any sleep. The instructions on the small jar of tablets said "1x a day for 10> pound dogs". Might give him another just before he sleeps. Why wait if it works.
As for dog food..while it's easy to assume it's the brand I'm not so sure. As he has has gas while eating Wellenss brand too. I think it has always been my spoiling him with snacks. Giving in. So he'd take the opportunity to ask more. HEHE!! But I just might go buy a bag of Wellness again anyway. As it is supposed to be "better quality". I stopped because he got bored of it. Maybe I can slowly get him back on Wellness.
Take care all.