Hope all goes well for you next week 
I think anyone who had mc before is bound to feel apprehensive and worried about any future pregnancies, however when you have a mental illness of course you panic as the symptoms can be similar to how you feel when the illness is kicking in. You question yourself more, is it right to feel this way, am I getting ill again etc.. Then of course you have the worries about meds etc..
You are receiving all the correct care and are in safe hands by the sounds of it, I really wish you well and I'm sure you will be.
I'm in a similarish (that's not even a word lol) sort of situation at the moment. My younger sister committed suicide almost 4 weeks ago now and I'm in absolute bits, all the symptoms I'm having are all so similar to how I feel when I'm going down, however my psych has assured me it is grief I am experiencing. Obviously I know I am grieving but I'm also panicking, getting racing thoughts and anxiety, sleeps all to cock even though I'm on a high dosage of sleepers that I feel like I'm really going nuts! My psych and cpn are keeping a close eye on me which is reassuring.
I hope I haven't upset you by telling you this and I don't mean to hijack your thread but I thought it may help you make sense that how you are reacting is normal to your situation (whatever normal maybe?!)
I wish you all the best with your health and pregnancy, Juney, xxxx