i am taking an aspirin but all of my episodes have happened from vomitting
I got food poisoning or a stomach virus over the summer and I threw up twice. Both times I went into what felt like afib. I have had 1 documented (was on monitor when it happened) episode. Thankfully, I was able to stop it with vagal manuevers. Ask my EP at my next appointment and he said it was very common for that to happen because it does something to your vagal nerve. Now every time I get nauseous I get scared to death.
I read you to say you have a medical diagnosis of intermittent AFib. Or is this a self diagnosis or assumption based on your description. You say the "test results" (assumed by a medical doctor) show no abnormalities. I believe "paroxysmal" (intermittent) or less AFib is very hard to diagnose unless one is lucky to be on an EKG when it occurs, or on a wearable monitor.
You didn't say why you were throwing up. If from too much alcohol, I'd say that may be the cause not only of the stomach problem but of the AFib.
If your doctor didn't recommend a mild anticoagulant, such as aspirin, I suggest you talk with him/her about this subject. AFib increases the chance of the formation of blood clots... but in the case of proxo-AFig the increase risk is small, maybe not enough to take the wear and tear of a regular aspirin. I have taken aspirin for years and have no stomach problems from it.