Well im paranoia but not as much as you are, to me it sound alittle OCD with the whole
"what if, what if.. thinking.
It sound your in a vulnuable situation for the moment.
if you have the option talking to a psycolist it might be a good idea, or just someone you trust with all the things going on with your life to get it off your cheast.
for your paranoia thing don't let it controll you, as more your getting it controlling you as harder its gonna get to get out of the spiral.
I do understand the fear, I actually been threatned on life with torture by a sick guy once who wanted to cut of my hand. it made me pretty scared obviously, not to mention the whole trans-crime thing, but as said its more rare for transguys than transwomen and it would specially seam unlike that your friends would kill you, unlike your in a very closeminded country/comunety, or other, in that caise maybe you should get some new friends.
so in general, talk to someone you can trust to get things out
and then challenge yourself not to let the fear overtake you, of course you shouldnt jump of a brigde but try do what you normally do and wasnt scared of doing.
also try not to be stressed, neither bored. overcoming a fear and getting better can be challenging so its best not to have to many other projects going on.