Many medications can cause people to vomit as a side-effect (gastric irritant).
Lyme causes a person to be afraid of vomiting (read this in a book about treating Lyme with Homeopathy), and I know both Bartonella and Lyme can cause anxiety...the combination can really do a number on a person...I speak from experience...
Reglan is known to cause a variety of movement disorders (including twitching & spasms). I hope they put a note about this in your medical record, and make sure all your doctors know that you should only be given Reglan again if under close observation and/or the benefits clearly outweigh the risks.
Zofran does not have action on all mechanisms of nausea & vomiting. Also, you may not have had a big enough dose of Zofran to counter the nausea/vomiting from the tramadol.
A discussion about this incident with your LLMD would probably be a good idea. That way, you can have a plan of action in place to hopefully keep you from getting so sick to need to go to the ER.
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, intermittant pancytopenia, chronic malabsorption/malnutrition, etc.; G-Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, IV Ceftazidime, Heparin (to flush PICC line), Claritin, Domperidone, Colloidal Silver (used topically), probiotics, homeopathy.