Horrific excessive gas

I have been chronically constipated for 6 months now and the whole time I have suffered with the most excruciating, painful, excessive gas that absolutely REEKS. It smells so bad like pure death coming out of my intestines. I am ALWAYS severely bloated and in pain - the only time I’m not is right after the stimulant laxatives have worked and got at least some of the stuff out of there. I have daily incomplete bowel movements and I constantly feel backed up, but I can never fully empty when I do go. Does anyone else experience this?