Thinking of getting sacral neuromodulation

32M here, I've had OAB with urge incontinence for the last two years.

I drink coffee every morning, about 2 cups 500-600 ml. I need to drink this for my bowel movements. In addition to OAB I have fear over bowel movements and must have them every morning so that I can live throughout the day.

I'm thinking of getting sacral neuromodulation (SNM), but chatGPT said it might cause constipation and I am worried over this.

My current functional capacity is around 300-500. I have urge incontinence which means I can pee myself, so far thank God it hasn't happened outside, but I wear an adult diaper in case.

My question is will SNM help me and will it cause constipation?