I was also raped while on active duty, my story is on this forum.
The stresses of rape in the military are huge, I fully understand what you have and are still going thru. As for the medication I was on an antidepressant for well over a year, I felt exactly the way you were feeling. I too did not like the feeling however, without the ups and downs, it gave me time to really deal with the issues at hand. It gave me space to deal with my deepest fears, my anxiety and gave me time to heal without the emotions getting in the way.
The feeling is normal. As for the PTSD the diagnosis is properly correct.
Hang in there, I was raped 30 years ago and I only faced my demons about 10 years ago.
If you wish to talk privately please send me a PM