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NEWBIE - CBFM question - PLEASE REPLY!

3 replies

MeandMyKid · 12/07/2010 13:31

Hi All!

I have been TTC for 9 months now and am on 5th cycle with CBFM. I always get Highs from CD9 and peaks on CD 16-18.

For the last three weeks I have changed my diet and am drinking about 4 times more water than normal and am constantly peeing - sorry TMI! Anyway I am on CD14 and still getting lows. Could my urine not be concentrated enough, even first thing in the morning or is it more likely that me or the monitor is jiggered.

Many thanks in advance for replying!

OP posts:

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AttilaTheMeerkat · 12/07/2010 14:14

These kits are beset with problems anyway even at the best of times. They are not totally reliable and can give misleading information.

Ovulation is not an exact science and a woman can ovulate earlier, later or not at all in any given cycle.

Taking in more fluid would make you urinate more. I would actually be making an appt with the GP soon as you have been ttc for nearly a year. Blood tests can be done to see what your hormone levels are like.

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chocciechip · 12/07/2010 15:15

The CBFM measures estrogen and LH. When it spots an increase in estrogen (which precedes an LH surge), that's when you get your highs. The peaks appear when you get your LH surge. I didn't get any highs on my CBFM this cycle, but I missed one day of testing and I think it upsets the chain of analysis IYKWIM (i.e. the machine needs to know if one day is higher than the one before, and if one gets skipped out it probably doesn't know whether the next day is high or low relative to the previous day - so just keeps giving lows).

Did you by any chance miss a day?

I'm guessing another possibility, but maybe dilute urine gave lower concentrations of estrogen and your CBFM is figuring it out relative to previous cycles - because it does 'learn' your cycles. I'd guess you will still get your peaks though (I did), so SWI before you usual days just in case.

If you don't get peaks or highs, it is possible it could be an annovulatory cycle which doesn't mean you or the machine are jiggered - that happens once in a while. HTH

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MeandMyKid · 12/07/2010 18:58

Thanks for your replies. I've not missed any days and am getting EWCM so I think I'll buy some OPK's as a back up.