I read somewhere that telling an IVF recipient to 'just relax and it will happen' is like telling a cancer patient to eat more carrots.

Many of us have had that experience, and many of us find it, at the least, unhelpful, and at the worst, hurtful and emotionally damaging. Somehow, the most well-meaning of people don't seem to see it that way.

Having answers as to why you're not getting pg is sometimes helpful, as you can honestly turn to these people and say to them, with conviction, 'Medically we have had full investigations, and we know now that we have an issue which means that for us, it ISN'T going to happen unless we get medical help.' it might not save your friendship, but having the line prepared and rehearsed might save your dignity when you would otherwise collapse in a puddle of tears in a public space.