Disney - I can't offer any specific medical advice, i did train as a nurse for 2 yrs before chucking it in and went to uni to become a psychologist, so i would offer the following advice:
I cannot advise as to your meds, but if you feel they are not working for you, speak to your gp. It may be a case of altering doses or perhaps changing them.
You may feel that as you are unable to share everything with your dh at the moment that talking to someone else may be helpful. They may be able to offer you new ways of working through your emotions and suggest other coping mechanisms for the pressure you are under, in conjunction with the meds. (we were taught meds are to stabilise whats happening chemically (as in pnd) but that is only half the story. Counselling and support groups for example are the next step to tackling how we cope and move on if there are other factors involved). Might help to have more control over how you feel about things. I don't mean to sound too psychologisty, you seem to be a very brave lady who is coping amazingly, and without a doubt a wonderful mother, But just remember you are important too! No one should feel alone or down when help, advice and support is out there. after all isn't that why we are all on these websites, to support each other!
Try not to read too much into not wanting your dh around at the mo. That could be down to many things!! I think all of us on here have found it difficult with our partners at one stage or another.( Im still going through it with mine, I dread it when jack goes to bed as it is then just the two of us and i hate the dead atmosphere between us) Hopefully when you start to feel better in yourself (and you will!) things will improve between you.
I hope i have not overstepped the mark or offended you with my suggestions. I really do believe you are doing an amazing job, and that you will get through this a stronger person!
hope tomorrow is a better day!