This is a problem if you have had digestion problems prior even raw can turn acidic if not digesting and continually purging.
If you are high percentage raw try increasing digestive fire with pungent spices if you will consume those raw ginger, pepper mustard and collard greens water cress etc onions garlic
exercise like hatha yoga or running although I see you have had problems there
a daily massage with oil on the abdomen (rub your belly) is good
triphala is good
and pranayama and kapalabhati agni producing breath is good.
Love...that is good to for self
Accept your body as it is now
rub your belly
A.