Hi littlebear
My sympathies, my 5 month old also has an aversion to sleeping at the moment especially at night.
You seem to have a few different problems. You are obviously exhausted which makes you vulnerable to depression, unable to think clearly and very vulnerable to criticism.
Also ADs and especially valium can effect you emotionally and again your ability to think clearly.
It seems that your DP is not being at all supportive..... Asking if you hit her???? Also making you feel guilty because this is not the rose-tinted time he imagined.
Can he or someone else have her for a night or two so you can get some sleep? You would have to sleep somewhere else so you can guarantee being uniterupted. I have found it amazing what a difference one night of sleep makes!
I would really try to cut down/stop the valium if possible. How long have you been on ADs? They can take 6-8 weeks to work. Maybe the dose could be increased?
Do you have any friends or acquaintances you can arrange to meet for coffee etc? I also find ther big groups a bit intimidating but have found having just a couple of people I know I can meet each week a lifesaver. My favourite activity is swimming DS loves it, it tires him out and I have coffee with some other mums afterwards.
My other recent discovery is a leisure centre with a creche. I now go to a class twice a week and can leave DS in the creche. Maybe you could do something like yoga or thai chi to help with the anxiety or sometyhing sweaty - whatever you fancy! I paid for a course so even when I dont feel like going I do because of the money and always feel better afterwards.
I guess what I'm saying is to try and prioritise you a bit and make it a regular thing. Try to get out of the house every day and speak to the GP re the meds. Once you feel a little better I think you need to tackle your DPs attitude but I expect that would be difficult at the moment when you're so exhausted. I really do feel for you. Tiredness is the worst thing. Sorry for long post, hope there may some ideas that appeal.