Could Clearblue Advanced OPK completely miss ovulation?

[RLI1105]

I would really appreciate some advice if anyone else has ever used the clearblue OPK's!

The last two cycles I have ovulated day 19 so was gearing up for the same this month. I've been using the advanced OPK kit from clear blue which has been low for the past 4 days (including this morning). My CM has been watery and I maybe had the tiniest bit of EWCM yesterday. Anyway, this morning I had a massive temp jump!
Do you think it's just a fluke? The ovulation monitor has been low every day (including today!)
This would have been our first month TTC and I'll be devastated if we're out already.

I don't want you to get your hopes up, but the first month I used mine I never got a positive. I was a bit fed up etc, but low and behold I turned out to be pregnant!

@mistermagpie thanks for replying! I've read a few people on here saying they didn't get a clear peak but I haven't even gotten a high! I think we'll just have to see what my temps do and keep DTD regardless. It's only the first month!

I also forgot to say I am cycle day 14 today