we were over 12mths trying IUI before our FS suggested full IVF and we had 20 eggs collected at opu of which 12 fertilised with ICSI and 12 were frozen we had a fresh embie transferred but no luck and our DD was the first frostie, It is a big step to move to IVF it certainly wasn't what I expected but for me I'm glad we made the move. Be guided by your FS but also outline your concerns and ask his/her advice. We are currently trying for bubby 2 and after Nov's lost angel we are now down to 4 frosties remaining so we are heading close to another EPU cycle we are hoping we may not need this, but are optomistic either way. Good luck with your journey