Hi Tanya,
So sorry to hear about AF

A friend of mine can only conceive through IVF because of problems with her DH, she is fine herself, but has had 1 successful ivf cycle and attempted another a few months ago only for it to fail, they did some investigations and found she had a fibroid, which caused alot of heavy clotting and bleeding at AF time and prevented her to conceive, she has now been in and had a D&C and something else im not quite sure of and has just been through another IVF cycle, just waiting for results, Im not saying thats what you have but you maybe can look into it!

Hope it eases for you soon.