I have phoned my MW about this, but being a bit paranoid. She doesn't think I have any leaks or infections... but you know when you can't ask real life people if something is normal ... that! 
I am getting a bit more mucus than before (though a pantliner copes fine whole work day) - it is clear but thicker/tackier than water for sure (it sits on tissue and glistens, it doesn't just soak in like water/wee). No bad smell (even made DH smell it ewwww) or sweet smell or sperm smell which I understand are causes for concern. For some reason the fact it's clear not cream is making me paranoid!
For those of you who are happy to "TMI" what is you/was your 3rd trimester discharge like and did it differ from before?