Hi Soul Mate, imagine my surpise to see this- i was just thinking the exact same thing myself today!!!
Dh and I DTD in the morning and later that day i had a little blob (i would say TMI- but i think we are passed that!! LOL) of cm and i started to panick (sort of) thinking it was the semen falling out (even though i had done the lift my legs over my head and hung there like an idiot for about 2 minutes after DTD to keep them in!!)

But yeah then i started to wonder which one it could be.... i am only 27- but like you i was on the pill for about 5 years before starting to ttc- so maybe it is just our natural cycle- and if its natural cm- they say thats the best time to DTD to get preggers!!

Sorry for your losses Soul mate... i really hope this is your body gearing up for the good stuff and that by xmas you will be celebrating a BFP!!

Good luck!!

StarBright