Hi. Firstly I would say don't feel worried about posting things. Nothing you said sounds unreasonable. I too lost my dog a few years ago. The silence is awful, so trust me I understand. I would say though give it six months. I know that sounds hard, but a puppy is a lot of work and I think we genuinely forget that.
With regards to the problems talking to your husband. I do understand it's hard if you have asked to speak to him and he hadn't come back. If you don't want to speak to him about it why not write him a note with what you are feeling and let him read it. Email or text may not work as you may read it back and be waiting for the reply.
You also might not get everything you want speaking to him, but make sure you are happy with what he says. And what the outcome is. I can completely understand the worry about the modelling photos. I imagine most people would feel the same.
As mentioned there are ways you can tell him how you feel without having to speak to him. So give some thought to what works for you and take things slowly