Zoey,
Don't live life in fear of what could happen, if you do that you will make yourself depressed. I have been escorting since I was 19, I am 28 now, I have never had any real problems, certainly nothing like you've mentioned, never been raped or robbed, stalked or "outted".
There's a few things I do to keep myself safe, and a few thing I say.
I wear a ring on my wedding finger, to them I obviously have a partner, where is he? they don't need to know.
My front room/living room, is my private area, I don't let clients in there. I keep the TV on so to them, there could be someone watching telly in there.
When asked are we alone I always say "no, but you wont see anyone else as long as your intentions are hot and kinky" something stupid like that.
I haven't put them up yet, as I have just moved but I have CCTV on the front door and a sticker in the window so if anyone wants to cause trouble they know they will be on camera so they will just do a runner.
My advise to you is, relax, I know what a Scorpio is like, one of my friends is one and she is one tough cookie, I call her the muscly wife! You have a lot of inner strength you just need to find that power inside you, be confident, keep your head held high and your eyes on theres, never let them do anything you are un-happy with never let them take advantage.
Also, maybe find a self defence class that will make you feel more confident about being able to handle a situation. I done one a few years ago and it really helped me in such a huge way. I am going on another one in 2 weeks as its been a few years since I did the last one, if give you the confidence you need to protect yourself.
People aren't all bad, I expect all of your customers will be lovely, but it doesn't hurt to prepare yourself incase one isn't.