Not sure what else you want or need to know considering what you just went through..
What should I discuss with my health care provider before using green tea?
Do not use green tea without first talking to your doctor if you have
heart problems or high blood pressure,
kidney disease,
an overactive thyroid (hyperthyroidism),
an anxiety or nervous disorder, or
a bleeding or blood clotting disorder or if you take a blood thinner such as warfarin (Coumadin).
Green tea contains a large amount of caffeine and may be problematic if used by people with any of the conditions listed above. You may not be able to use green tea, or your doctor or health care provider may recommend a lower dose or special monitoring.
www.drugs.com/mtm/green-tea.html