So sorry you are going through this. I have a history of depression and anxiety, however I also had/have fertility problems - so this surprise baby after 8 years of trying took me out of my last bout of major depression and I have been ok all through pregnancy. I was hospitalized once because of major anxiety due to financial concerns when the market crashed and I thought I was going to lose my husband and everything I had. I could not turn my mind off and therefore could not sleep, at all. They tried CBT therapy with me daily, it didn't work for me but maybe it might help you. Whatever you are concerned about there is absolutely no way that you know it will happen, since we cannot see into the future...and hopefully in knowing that your concerns won't necessarily come true, and probably won't, might help to keep those thougths in perspective and away. I didn't lose everything, not even close - and we both have miracles on the way!
Hugs and let me know if you need anything.