First off- congratulations!
I'm a fellow anxiety/depression sufferer. I'm currently not on meds- I went off of them about a year ago. Some days are still really hard, especially when anything "out of the ordinary" happens.
I'd ask your OB if there is something you can be on while you are coming off of the other meds. Technically, no psych med should be quit cold turkey, it can really mess with your head. That said- I've done it and survived, it's just much harder. Do you have a support system while your husband is away? The holidays also make things seem a lot worse- believe it or not, they are one of the top times for depression.
As far as the endo- I don't think there is anything about it that will effect pregnancy- only your ability to become pregnant, which you already have! But I could be wrong about that.