Scared about therapy...

I really need it and want it and I start tomorrow, but I may be pregnant. They do think I have a few mental disorders and will be testing me for them. I use to by physically violent, but have worked really hard on it and it's gotten much better. I am worried that if I am and they find out that they will take it from me when it's born. I know I'm worrying about something that isn't even here yet, but it kind of been a big factor in me going to therapy.