I have experienced abdominal pain with other symptoms of heart rate dropping very quickly to between 45-58 beats a min for a few minutes, hot flash with sweating, and a hard time taking deep breaths. The stomach pain lasts for about 10 min and spelt gets less and less painful. The heart rate drop only Lasts for a min maybe two. The hot flash and hard time breathing lasts for about 5 min. I’m trying to figure out of this could all be stress related or too much acid in my stomach or if it is something worse having to do with my heart. I do find my self burping a lot the whole day after. The only medication I am on is birth control. I started keto about 4 months ago and I am wondering if the high fat intake is not working well with my body. I have had my thyroid checked before and it was on the low side but not enough for the doctor to be concerned. I work out 4-5 days a week 30-60 min each day and walk 10000 or more a day ontop of that. Any help would be appreciated.