I wonder if it would help with a luteal phase defect? I start to spot 9-10 dpo, which is 4-5 days pre-AF. If raspberry leaf tea strengthens the uterine lining, maybe it would help with the spotting and make implantation more likely. Just conjecture -- I'll ask my doctor on Tuesday (it'll be my first appt with a new dr, though, so no promises) what she thinks.