Woah!!!! Everyone who is going with the tough love approach PLEASE stop. I know you mean well but honestly, it's not appropriate here.
Bigga, I am walking in your shoes here. Chronic health condition that's done a number on me since 18. Felt pretty suicidal for decades, tried twice but thankfully unsuccessfully. Met my wonderful DP in my late 30's and fell pregnant after a few months. Finally I loved my body again, it worked! I was in a total bubble. My pregnancy was amazing and flawless, my son is the light of my life. Then secondary fertility kicked our arse hard 
I have had 18 months of TTC, two miscarriages and I am 40 in a few months. There is nothing we can do. My partner is an only and doesn't want that for DS. I come from a small family, only extended family is far away and elderly, it's crap but it's our reality. On the whole I am coping really well, but Christmas is extremely difficult for me. I often fantasise about just running away and not celebrating. But I do it for my son and my partner and always enjoy it once I am in the midst of it.
When you are depressed 'happy' occasions can be torture, I totally understand. I also understand you wanting to avoid help for your mental health as to your mind, if you could just have another baby, everything would be fine. I'm not sure if that's true hand on heart, but again I understand the mindset.
I think counselling actually would be really beneficial for you as it goes. You need to get to a point I think where you leave IVF to one side and instead think about finding some peace with what you have and still TTC but naturally and without pressure. Unfortunately IVF can become almost an addiction where the Gambler has already invested so much money, that they can't quit as otherwise the debt was for nothing. That's one of the reasons I have decided not to walk that road, there is too much heartache at the end of it.
I know I haven't helped in the slightest but I want you to know I get it, I feel your pain, and I empathise with you. Please think about accessing some counselling, there is some very specific infertility therapy out there, I know there are places in London, not sure where you are based.