Hi LizJessie,
Sounds exactly like EWCM - the good stuff, the stuff you get before you O - absolutely nothing to worry about - go and celebrate!!!. Yep, if it stretches that far, I'd say that is what it is. Try googling the Billings Method website - I think there are some pictures of the EWCM on there.
Sorry to hear about your losses.
Congratulations on the proposal. Forget the BD in 8 days - do it NOW!
Good Luck,
TICKLISH