Can I somehow set up the monitor on day 5 of my period??

I ordered a Clearblue Advanced Fertility monitor ages ago but only just received it today and I'm at the end of my period! :( My period started on July 25th in the afternoon and today is the 30th. I thought I'd be able to use it for this cycle (because I REALLY need to get pregnant this cycle if possible, otherwise we have to stop trying for awhile) but it won't let me set it up because it's not within the 1-4 day time frame from the start of my period. :( Is there any way I can set it up for the earliest possible day & time it lets me (the 27th at 12:01am) and just start taking the tests right away?? It will kindof be 2 days off, but won't it still detect when I ovulate?? I really can't wait another month to test because we need to try this month! Please Help. Thanks