Oh Moomin I am here and thank you for saying that; I never quite know when to pop up and say hello. Although I know that you lot are lovely and would never begrudge anything, I also know how gut-wrenching others' good news can be, and is. Truth is, I still feel very connected to this lovely little group, possibly because of our shared and thankfully uncommon problems, but also because my pregnancy still doesn't feel real and I am so used to limbo, it seems to be simply a continuation of the long months of waiting, wondering and hoping. Of course, I know it isn't, but I hope that makes sense?
I am so very sorry that the injections weren't successful this time. Of course, in our case, I suppose there are two types of success. 1. Actually ovulating, and 2. Actually getting pregnant. I know for me, it was almost as much of a relief to hear that 150mg of clomid actually made me pop out an egg the first time it worked, and to hear that it wasn't fertilised therefore wasn't such a big issue. All I wanted was to actually 'work' again and getting pregnant was something of a bonus! (Massively underplaying it here, but again, you know what I mean). So, am I right in thinking that you did actually ovulate, and therefore will have a 'real' period? If so, that's positive in itself, and if research has shown that it's third time lucky, then I have everything crossed that you and your ovaries will be part of that fantastic statistic! 
Boggle I am also sorry for your disappearing follicle and disappointment. FWIW, I know of a few women who, after TTC for months without luck, were prescribed metformin and it worked like a wonder drug. In fact, one of the ladies on the Bumsnet bus is one of those and she is now 20+ weeks with twin girls. I think she was trying for about a year. She sent me some Metformin through the post (black market!) and I started to take them, but was rubbish at remembering and so only took about 5 at the beginning of my cycle and stopped. This was the cycle I got my BFP. Coincidence? I don't know! Anyway, this month has to be your month. Again, I am keeping fingers and toes crossed for you
And finally, lovely Ella I repeat everything I have said to the others. If 50mg is working, you definitely don't need more. Last thing you want is to be over-stimmed. Have you enquired about Metformin? It's only a matter of time for you all, I just know it. You will get there! Keep getting your lovely man juice into place and it will happen. Much love x x x x