Hi Lily --
I think you know my story -- I had a trachelectomy about a year ago, and like what happened with you, no one ever mentioned anything about cervical mucus ever being an issue. The first I heard of it was when I went to a fertility specialist (who had never heard of a trach, and insisted that it was impossible for me to get pregnant naturally -- um, yeah, I left him right away). Anyway, he said that with such little cervix (I only have about 5-10mm left after the trach), that lack of cervical mucus would be an issue, and that that's a problem for lots of women who's have LEEPs and CKCs.
Anyway, I then discussed this with two other fertility specialists, as well as my gyn/oncs and ob/gyn -- and they all said yes, it can be a problem, but not necessarily. Both of the gyn/oncs said no, this guy was wrong, and about 50% of trach patients actually get pregnant on their own (and therefore, cervical mucus was not an issue for a lot of women).
I was terrified that I was going to have this problem, but I am happy to report that I absolutely did not! At first though, I was taking something called Fertile Aid CM (for cervical mucus), which were just daily pills, since I was scared things wouldn't go so well once I started having sex again. Thankfully things were fine
I stopped taking the pills once I found out things were working fine, and I continue to not have a problem so I figured I didn't need them. Maybe try those pills? They were about $30 a bottle for a month's supply.
I'm sorry you're having this issue. Did you maybe change birth control as well? Perhaps it's a hormonal thing, and not directly related to your surgery?