I have a history of blood clots and had a subdural hematoma a year ago. is hyperbaric oxygen therapy for a stem cell procedure for my back a bad idea?

Please read this : article on approved uses of Hyperbaric Oxygen Therapy vs. false claims of its efficacy. I'm not sure I understand what you've been told it will help, but it doesn't help " back problems" or a bleeding diathesis. It does, however, have potential side effects, some serious. See: www.fda.gov/ForConsumers/ConsumerUpdates/ucm364687.htm for the 13 approved uses for HBOT, false claims & side effects.