Do you think it matters if OPKs are expired? I got mine on ebay. One pack was only expired by couple weeks. That cycle they showed positive reading. The others, that are like 10 months expired showed negative in the next cycle while BBT shows that i O-ed.
This time i ordered the ones that are NOT expired. But they're not here yet so im using the ones i got.
This time i ordered the ones that are NOT expired. But they're not here yet so im using the ones i got.