Get 20g pregnenolone from Nutraplanet along with 3 bottles of their Topical Matrix. Make your transdermal Preg and start dosing 100-150mg daily. In a couple weeks, anxiety would be a thing of the past.
You are waking up mid-sleep because you are running out of cortisol. The fact that you are anxious and scared when you wake up confirms that. You are running out of it because the extra testosterone has 'asked' for an increase in cortisol metabolism and did not get it permanently. So whatever cortisol you had made that day burned out quicker leaving little to keep you asleep through the night. Also, growth hormone needs cortisol to do its thing, you cannot recover optimally with depleted cortisol.
In addition to boosting your cortisol metabolism, transdermal preg would convert to allopregnanolone that would balance out the neurotransmitters in your brain and, barring any serious genetic defects, remove any symptom coming from the imbalance: anxiety, fear, mental chatter, etc.
While waiting for the preg to kick in, you could also try Revamp that is still on sale at Nutraplanet. It provides straight cortisol in the adrenal extract and can fix your sleep when taken before bed like the instructions say anyway.