Talk to Gastroenterologist on SIBO Gastro

How can I know if I have low or high stomach acid? I was on PPIs for 3 months after experiencing heartburn episodes during Ramadan. However, now I’ve noticed that I feel bloated even after eating small amounts of food. I’m also constipated I used to have daily bowel movements, but now I pass stool every third day. Could this be SIBO? I also have reflux symptoms where food seems to come back up into my throat, and I experience some difficulty swallowing, which I believe is a symptom of GERD. But is this condition caused by low stomach acid or high stomach acid? What tests can I take to determine this?