How can this be?

[proudmummy]

I'm due af tomorrow so how can I get a positive opk?

 

[Mummy to be x]

If there's a chance you could be pregnant, HCG hormone can give a false reading on an opk. Xx

 

[purplecupcake]

Many women get an LH surge before their period.

 

[BeachyFeelin]

Many women get an LH surge before their period.

^ this. Below is some info I found:

Home pregnancy tests are testing for hcG. Ovulation tests are testing for
LH. Chemically, these two hormones are extremely similar. So similar, in
fact, that hcG is mistaken as LH by ovulation tests. (A home pregnancy test, however, does not mistake LH for hcG.)

Given that ovulation tests are cheaper than home pregnancy tests, frugal
peestick enthusiasts often want to know if they can simply use OPKs to test
for pregnancy. The answer? Yes... BUT

*a HPT will almost always pick up on a pregnancy before an OPK

*only a HPT will confirm you are pregnant. A positive OPK could mean
you are ovulating.

*this isn't what OPKs were intended to do, so don't blame the
peesticks when they don't bow down to your madness


So in short, if you truly are pregnant you should be getting BFP's on HPT's now.