Krikkit, kellymom (website) has some links, but they seem to just focus on lactation after a late or neonatal loss, so not sure if you want to read them (might be upsetting?). I suspect you may have to wait it out until your hormones are back to normal. I would also postpone the FET until you have stopped leaking because your prolactin is probably elevated, which may interfere with the FET. I know most clinics won't allow you to do an IVF cycle while breastfeeding (or until 3 months after weaning) because of the hormones; I think the same may apply for FETs. At the very least I'd be discussing the situation with your FS to get their advice.