Is it.. Hmmm, not sure too. My gynae only told me blood test is the only that is reliable. I almost faint when i hear that.
but this is what i get from website
9. Can I get a positive OPK and then not ovulate?
Yup! It is possible for your body to "gear up" to ovulate, leading to an LH surge-- and then, for some reason (such as stress, illness, travel, or random fluke), your body fails to release an egg. When this happens, your LH surge will dissipate and your cevical mucus (a signal of fertility) will dry up. Once the stress is resolved, your body will try again. This can happen more than once per cycle. Therefore, there is no way to be sure you ovulated, even if you had a positive OPK. OPK's are most accurate when used in conjunction with fertility charting (NFP or FAM.) That way, a positive OPK can be cross-checked with an increase in basal body temperature and/or cervical mucus dry-up.
12. I never get a positive OPK. Does this mean I'm not ovulating?
No, not necessarily. It can depend on how often you test. Most OPK's say to test once a day, around the same time each day. However, it is possible for your LH to surge and dissipate in less time than that, so testing only once daily may result in missing the surge. Here is an example of my OPK's for one cycle: