I'm 28 and don't smoke. can i still have an afib or angina if my ekg, chest x-ray, blood, and stress test came back normal? one ekg showed abnormal heart rhythm but 4 others ( taken within 5 month span) showed normal heart rhythm. i'm really scared.

Stay calm: 28 year old woman with cardiac concerns. Please stay calm and follow up with your physician. Hypertension is a disease with no symptoms that can affect young people, as can arrhythmia. EKG is one point in time and arrhythmia can be episodic and needs to be investigated with a ZIO patch or holter/event monitoring. You need a cardiology consult. Stay strong and manage it. You can do it, good luck.

Not likely: AFib and angina are definitely unlikely in a person your age with the results you described. You should think about other causes. And "abnormal heart rhythm" is too vague.