I have some sort of digestive issue that causes me to regurgitate food after eating.

I've spoken to multiple doctors and they've really had no solution so I've just been living with it. It doesn't bother me that much as I'm used to it.

If it's a big enough meal, this phenomena can last 2-3 hours following a meal.

Question is.. would my fast start from the last reguritation? or the last meal?

ie. I eat my last meal around 7pm but sometimes I'll regurgitate every 5-10 minutes until about 10pm