Mozza Congratulations to you and a warm welcome to the world for Alice! So happy for you, you have come through so much heartbreak and worries - but now she is here! How fantastic! Enjoy those precious first weeks of getting to know her 
Sofia will always be in your heart and memory, watching over you and your family.
green Good luck with the IVF! Will be watching and waiting how you get on, fingers crossed!
Welcome, Rita and zest May your stay on this forum be short and sweet! You will find lots of support and handholding here.
Rita I have read many stories on MN from women who had successful pregnancies with one tube, there is no reason why it shouldn't work for you! Have a look around on the other threads, it is definitely not uncommon.
Zest I'm also 42, had my DS at 39, very normal and unproblematic pregnancy. But now struggling to have DC2 - I've just had my 4th miscarriage in a row. Nothing 'obvious' wrong with me, test have been/are being done. Progesterone is good, AMH is low (normal at my age...), chromosomes all good for me and DH, no clotting problems. I have no problems getting pg, but can't seem to stay pg. Will get more test results in 6 weeks, when they have analysed my most recent loss.
I am a bit all over the place at the moment - on one hand, I want to have a break from ttc and being pregnant, on the other hand I feel very panicky and anxious about time running out for me and DH. I honestly don't know if I can face ttc again, but my heart just breaks at the thought of not having another child 
I want to look into NK cell testing, I have heard very encouraging stories about it. I don't hold much hope that the mc tests will give any results, they didn't last time... And I had so many drug treatments in my last pregnancy, I honestly don't know what else they could do (apart from steroids, which is the NK cell theory).
Don't shoot me down, but I am (quite seriously) thinking about adoption... Never ever thought that this could be something for me, but now it could certainly be an option. Really need to find out more about it, but some reading around on MN has at least not discouraged me (yet).