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Infertility Support and Discussion
Question about Clearblue Fertility Monitor
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Anonymous
| I know that the monitor measures both estrogen and the LH surge. However, according to instructions it asks for first morning urine. I had always thought that's the wrong time to be taking OPKs. So, what's the difference here? |
Anonymous
| OPKs only measure LH, not estrogen. Hence, the difference between OPKs and the monitor. |
Anonymous
| The PP is right - it measures both and compares it over the course of a few days - and it gets to know you over a month or two, so recognizes the two hormones in FMU |
Anonymous
OP, definitely do FMU, and make sure you're in the "window" of time that the monitor sets for you after day 5 or so (as per the instructions). E.g., if you normally wake up at 6am, don't sleep until 2pm on the weekend and do FMU then -- it won't be accurate 
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