Sazbrilla, I'm so sorry, it's a crappy time for you. I've only had one m/c (when ttc) it's so heartbreaking, I can only imagine what 3 feels like
I'm struggling too, so not sure I'm in a great position to give advice on what helps. But I'm always here to listen, I find that does help a lot.
After the first few weeks, life just seemed to go on and people stopped asking about it, so I just stopped talking about it, but actually I still need to talk about it. I've called a counsellor and hopefully will be able to get some sessions there.
I don't even know if it's best to stop ttc, as I'm finding it stressful. And the awful thing is, even if I got pregnant again, the stress wouldn't stop. That's what I find depressing, I can't even see an end to this.
Sorry, I should just shut up now, this is probably not helping you at all! But know that you're not the only one that feels like that.
Though, I would say, try and sort things out with your DP, you need each other. And try your GP for counselling.