When we first decided to get pregnant I charted (temp) and used ovulation kits. Then after a few months I added mucinex. That also didn't work. Then we gave up and a few months later found out we were pregnant. So I have no idea if it works. It didn't work for us. It took us 8 months to get pregnant.
I would have had to have cervical mucus in the first place in order to have something to thin. I used "PreSeed" to make up for my utter lack of cervical mucus.
Re: cough syrup
Sorry-- no help from my quarter. But GL!
<br /> My Ovulation Chart</a>