Help! My gas smells AWFUL

Hi this is really embarrassing but I need help / reassurance / advice. For the last 4ish months my gas has smelled HORRENDOUS like inhumane and I’ve tried to change many things in my diet. Keep in mind I’m 33F, pretty healthy, intermittently fast, play sports/exercise. I was freaking out thinking it was cancer so I got an endoscopy in my stomach and only a bit of erosion was visible. Doctor said she is waiting for results regarding a bacteria test which I’m hoping to receive in the next week or so. But this flatulence is sooo bad like I have to go into another room, it’s almost like a burning feeling and it’s usually silent. I don’t really eat dairy in general so I don’t think it’s that, I’ve cut out bread to avoid wheat and gluten, I haven’t fully cut down on eggs so perhaps that’s next, and I’m not drinking half as much black coffee as I did and have switched to decaf black (for the most part). When I said this to the stomach doctor she said “yeh I get clients that say this same thing” kinda brushed it off but, this doesn’t smell right. Can someone shed some light on their experiences? Should I get a colonoscopy? I do tend to eat big meals at once if I have gone some hours without eating and I have noticed when I’m full it happens straight away so I’m going to test smaller meals. It’s just really interfering with my life, it’s embarrassing and has me anxious that it might be something sinister. 😭