Did you have these fainting spells while you are on medications? What medications were you taking and how much.
The reason I ask is that medications, especially blood pressure medications can cause or worsen fainting conditions. Also..... certain foods and drinks can interact with medications and cause all kinds of problems.
For instance, various high blood pressure medications can be effected by too much calcium or potassium or sodium in one's diet.
Does you blood pressure normally get as low as 71/44 while you are NOT on medication? That is very low blood pressure. I know that, in my case, when my blood pressure gets near those levels I feel weak, very tired, fatigued and occasionally feel like I am going to pass out.
Also....... if I go outside on a high pollen day, it must interact with my medications and/or my heartbeat, and it also can cause me to feel like I could pass out.
Just throwing out some ideas, or comments for you to ponder.
Best of health!