Hi Richenda,
So glad you are OK!
The common causes of serious injury from HRT (MTF) are stroke/DVT/pulmonary embolism ( all caused by blood clots) they tend to happen quickly. If you are self medicating on E be aware of sore or swelling limbs, particularly legs, loss of sensation in the limbs, not fitting in your shoes for example. Headache, change in eyesight, hearing, change in speech. If any of that occurs get to an ER, you are in serious danger.
With Spiro, the major side effect is lowering in blood pressure, hence your dizzy spells. Most people who die from Spiro do so at night, they go into a coma from a loss of blood pressure which is naturally lower at night. They feel dizzy and drowsy and panicky.
They can't call an ambulance as they cannot coordinate.
I really do know that people need to self medicate in some situations. They are the ones who will have a high chance of harm.
Please see a Doctor if you can.