I'm also 43! And have a beautiful 2 year old little boy, I had him after I turned 40! It took us over 2 years to fall pregnant with him 3 Ivf cycles and I've lost count of how many frozen cycles. Hang in there it does happen! and I'm crazy enough to be back on the Ivf road, And am currently on a 2 month break after yet another unsuccessful cycle. But I have recenly had a biopsy and have found out I have killler cells in the uterus perhaps preventing a pregnancy I had a miscarriage at ten weeks before Christmas...then did a fresh cycle no go. Now the biopsy . I was wondering if anyone had heard of these cells? Or had any experience this area. Doctor has put me on steriods!! For a month then if clear I can go into another cycle. I have a frozen embie waiting. I have been a stalker on this site for ages but thought it was time to chat. Hoping I can be of some help it's been a long road but i wouldn't change a thing.