Hi Trottee! We're into month 11 ttc with it being our second month of trying with concieve plus. I'm 39 so don't have much ewcm for long so to maximise our chances we thought that we'd give it a go. As Joey says, can't hurt! 
I think that there's been a few people who've used it on the forum and got their bfp. 
Good luck and babydust to you!