Yes, I suffered similarly after my takedown. It was miserable. My best guess - possibly some bacterial overgrowth but likely just my body healing up and my gut "adjusting" back to equilibrium. The process was slow to improve, and my doctor would not prescribe Flagyl or antibiotics. I was going as often as you or more, and nights were miserable for months.
Hope that communicates empathy - I get what you are going through, and it sucks. It should get better - keep looking for new ideas and trying new things. Probiotics probably made the first difference for me and over time fiber helped as well. I had my takedown in 2006, and would guess that it took me until 2014 to get to where I could fart "normally." That was after trying many things over time. Currently I eat Metamucil wafers with every meal, am on sulfazine, and take Prilosec once daily. All seem to help me out significantly. Not sure if those things would have helped early on after takedown.