I'm so very sorry for your loss. I hope you are getting a grip on your grief and responsibilities and are able to start moving forward again in your quest to become healthy.
I would recommend you call the Bariatric department and speak to the Nurse Practitioner or Physicians Assistant and the Nutritionist for help getting you back on your weight loss program and to find out why you are having this gas. They will help and you should not feel ashamed to ask for their help either. You might feel embarrassed, that is normal, but the aim here is to loose the weight and get healthy again, so don't loose site of the reason why you had this surgery just because you're embarrassed or uncomfortable seeking help.
Good luck and best wishes
Kt